feat(core): add TxValidator interface (#19950)

core/appmodule/v2/module.go

@@ -47,10 +47,10 @@ type HasEndBlocker interface {
 	EndBlock(context.Context) error
 }
 
-// HasTxValidation is the extension interface that modules should implement to run
+// HasTxValidator is the extension interface that modules should implement to run
 // custom logic for validating transactions.
 // It was previously known as AnteHandler/Decorator.
-type HasTxValidation[T transaction.Tx] interface {
+type HasTxValidator[T transaction.Tx] interface {
 	AppModule
 
 	// TxValidator is a method that will be run on each transaction.

core/appmodule/v2/tx_validator.go

@@ -0,0 +1,13 @@
+package appmodule
+
+import (
+	"context"
+
+	"cosmossdk.io/core/transaction"
+)
+
+// TxValidator represent the method that a TxValidator should implement.
+// It was previously known as AnteHandler/Decorator.AnteHandle
+type TxValidator[T transaction.Tx] interface {
+	ValidateTx(ctx context.Context, tx T) error
+}