Migrate x/auth cmd's to TxGenerator marshaling (#6391)

* Migrate encode, decode, and broadcast cmd's to use TxGenerator marshal methods

* Fix tests, add EncodingConfig

* Add simapp/encoding.go and wire up with simcli

* add godocs

* fix tests

* Debugging CLI Tests

* Fix integration test

* 6391 - lint issues and code coverage (#6414)

* fixed lint issue of "txEncodeRespStr"

* added tests for encode.go

* WIP: added tests for decode.go

* added txEncoder at bytes

* updated decode test

* updated txBytes to use TxEncoder in decoder test

* added a require after TxEncoder

* removed file save

* debug decode command

* fixed decode tests

* added decode cli

* updated encode and decode in a single file

* separated decode test from encode test

* review changes

* removed register interface

* review change

* Fix tests

* WIP add test for tx sign

* removed commented code

* Fix flags

* WIP add test for sign

* Address review suggestions

* fixed command issue

* Add tests for TxEncoder

* Revert sign changes

* Fix TxEncoder tests

* Fix GetSign Cmd

* Add tx test

* Remove duplicate validation

* Add tests for TxDecoder

* Fix tests

* Fix tests

* Output to clientCtx.Output

* Fix cli_tests

Co-authored-by: atheeshp <59333759+atheeshp@users.noreply.github.com>
Co-authored-by: atheesh <atheesh@vitwit.com>
Co-authored-by: anilCSE <anil@vitwit.com>
Co-authored-by: sahith-narahari <sahithnarahari@gmail.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

std/codec.go

@@ -9,22 +9,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/auth/vesting"
 )
 
-// Codec defines the application-level codec. This codec contains all the
-// required module-specific codecs that are to be provided upon initialization.
-type Codec struct {
-	codec.Marshaler
-
-	// Keep reference to the amino codec to allow backwards compatibility along
-	// with type, and interface registration.
-	amino *codec.Codec
-
-	anyUnpacker types.AnyUnpacker
-}
-
-func NewAppCodec(amino *codec.Codec, anyUnpacker types.AnyUnpacker) *Codec {
-	return &Codec{Marshaler: codec.NewHybridCodec(amino, anyUnpacker), amino: amino, anyUnpacker: anyUnpacker}
-}
-
 // ----------------------------------------------------------------------------
 // necessary types and interfaces registered. This codec is provided to all the
 // modules the application depends on.
@@ -35,11 +19,15 @@ func MakeCodec(bm module.BasicManager) *codec.Codec {
 	cdc := codec.New()
 
 	bm.RegisterCodec(cdc)
+	RegisterCodec(cdc)
+
+	return cdc
+}
+
+func RegisterCodec(cdc *codec.Codec) {
 	vesting.RegisterCodec(cdc)
 	sdk.RegisterCodec(cdc)
 	cryptocodec.RegisterCrypto(cdc)
-
-	return cdc
 }
 
 // RegisterInterfaces registers Interfaces from sdk/types and vesting