feat(orm): specify generic gRPC query service (#11791)

## Description

Ref #11774 

This proposes a generic gRPC query service that uses direct index access and can basically be implemented as a thin layer directly on top of `ormtable.Table`. There is relatively little code required to implement this but it can potentially provide a lot of value as a way to expose queries to basically everything that's using the ORM without needing to implement any custom gRPC queries.

A version of this which is type safe is also proposed in #11774 but that would require additional codegen of .proto files. #11774 also proposes a logical query layer instead of direct index access but that's substantially more code to do even naively and an optimized version would take more effort.



---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/main/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/main/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

api/cosmos/orm/query/v1alpha1/query_grpc.pb.go

@@ -0,0 +1,145 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.2.0
+// - protoc             (unknown)
+// source: cosmos/orm/query/v1alpha1/query.proto
+
+package queryv1alpha1
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// QueryClient is the client API for Query service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type QueryClient interface {
+	// Get queries an ORM table against an unique index.
+	Get(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error)
+	// List queries an ORM table against an index.
+	List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error)
+}
+
+type queryClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewQueryClient(cc grpc.ClientConnInterface) QueryClient {
+	return &queryClient{cc}
+}
+
+func (c *queryClient) Get(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error) {
+	out := new(GetResponse)
+	err := c.cc.Invoke(ctx, "/cosmos.orm.query.v1alpha1.Query/Get", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *queryClient) List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error) {
+	out := new(ListResponse)
+	err := c.cc.Invoke(ctx, "/cosmos.orm.query.v1alpha1.Query/List", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// QueryServer is the server API for Query service.
+// All implementations must embed UnimplementedQueryServer
+// for forward compatibility
+type QueryServer interface {
+	// Get queries an ORM table against an unique index.
+	Get(context.Context, *GetRequest) (*GetResponse, error)
+	// List queries an ORM table against an index.
+	List(context.Context, *ListRequest) (*ListResponse, error)
+	mustEmbedUnimplementedQueryServer()
+}
+
+// UnimplementedQueryServer must be embedded to have forward compatible implementations.
+type UnimplementedQueryServer struct {
+}
+
+func (UnimplementedQueryServer) Get(context.Context, *GetRequest) (*GetResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Get not implemented")
+}
+func (UnimplementedQueryServer) List(context.Context, *ListRequest) (*ListResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method List not implemented")
+}
+func (UnimplementedQueryServer) mustEmbedUnimplementedQueryServer() {}
+
+// UnsafeQueryServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to QueryServer will
+// result in compilation errors.
+type UnsafeQueryServer interface {
+	mustEmbedUnimplementedQueryServer()
+}
+
+func RegisterQueryServer(s grpc.ServiceRegistrar, srv QueryServer) {
+	s.RegisterService(&Query_ServiceDesc, srv)
+}
+
+func _Query_Get_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).Get(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cosmos.orm.query.v1alpha1.Query/Get",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).Get(ctx, req.(*GetRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Query_List_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).List(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cosmos.orm.query.v1alpha1.Query/List",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).List(ctx, req.(*ListRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// Query_ServiceDesc is the grpc.ServiceDesc for Query service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Query_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "cosmos.orm.query.v1alpha1.Query",
+	HandlerType: (*QueryServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Get",
+			Handler:    _Query_Get_Handler,
+		},
+		{
+			MethodName: "List",
+			Handler:    _Query_List_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "cosmos/orm/query/v1alpha1/query.proto",
+}