Refactor tx middleware to support pluggable feemarket module

Closes: #11415

proto/cosmos/tx/v1beta1/tx.proto

@@ -142,6 +142,11 @@ message AuthInfo {
   //
   // Since: cosmos-sdk 0.46
   Tip tip = 3;
+
+  // extension_options are arbitrary options that can be added by chains
+  // when the default options are not sufficient. If any of these are present
+  // and can't be handled, the transaction will be rejected
+  repeated google.protobuf.Any extension_options = 1023;
 }
 
 // SignerInfo describes the public key and signing mode of a single top-level

simapp/app.go

@@ -471,6 +471,7 @@ func (app *SimApp) setTxHandler(txConfig client.TxConfig, indexEventsStr []strin
 		SignModeHandler:  txConfig.SignModeHandler(),
 		SigGasConsumer:   authmiddleware.DefaultSigVerificationGasConsumer,
 		TxDecoder:        txConfig.TxDecoder(),
+		FeeMarket:        authmiddleware.StaticFeeMarket{},
 	})
 	if err != nil {
 		panic(err)

types/errors/errors.go

@@ -162,6 +162,9 @@ var (
 	// ErrAppConfig defines an error occurred if min-gas-prices field in BaseConfig is empty.
 	ErrAppConfig = Register(RootCodespace, 40, "error in app.toml")
 
+	// ErrUnknownAuthExtensionOptions defines an error for unknown auth_info extension options.
+	ErrUnknownAuthExtensionOptions = Register(RootCodespace, 41, "unknown auth_info extension options")
+
 	// ErrPanic is only set when we recover from a panic, so we know to
 	// redact potentially sensitive system info
 	ErrPanic = errorsmod.ErrPanic

types/tx/types.go

@@ -156,6 +156,10 @@ func (t *Tx) FeeGranter() sdk.AccAddress {
 	return nil
 }
 
+func (t *Tx) AuthExtensionOptions() []*codectypes.Any {
+	return t.AuthInfo.ExtensionOptions
+}
+
 // UnpackInterfaces implements the UnpackInterfaceMessages.UnpackInterfaces method
 func (t *Tx) UnpackInterfaces(unpacker codectypes.AnyUnpacker) error {
 	if t.Body != nil {