feat(client/v2): add autocli run + simapp example (#13867)

Co-authored-by: Julien Robert <julien@rbrt.fr>

simapp/simd/cmd/root.go

@@ -39,7 +39,9 @@ import (
 // main function.
 func NewRootCmd() *cobra.Command {
 	// we "pre"-instantiate the application for getting the injected/configured encoding configuration
-	tempApp := simapp.NewSimApp(log.NewNopLogger(), dbm.NewMemDB(), nil, true, simtestutil.NewAppOptionsWithFlagHome(simapp.DefaultNodeHome))
+	// note, this is not necessary when using app wiring, as depinject can be directly used.
+	// for consistency between app-v1 and app-v2, we do it the same way via methods on simapp
+	tempApp := simapp.NewSimApp(log.NewNopLogger(), dbm.NewMemDB(), nil, true, simtestutil.NewAppOptionsWithFlagHome(tempDir()))
 	encodingConfig := params.EncodingConfig{
 		InterfaceRegistry: tempApp.InterfaceRegistry(),
 		Codec:             tempApp.AppCodec(),
@@ -88,6 +90,10 @@ func NewRootCmd() *cobra.Command {
 
 	initRootCmd(rootCmd, encodingConfig)
 
+	if err := tempApp.AutoCliOpts().EnhanceRootCommand(rootCmd); err != nil {
+		panic(err)
+	}
+
 	return rootCmd
 }
 
@@ -307,3 +313,13 @@ func appExport(
 
 	return simApp.ExportAppStateAndValidators(forZeroHeight, jailAllowedAddrs, modulesToExport)
 }
+
+var tempDir = func() string {
+	dir, err := os.MkdirTemp("", "simapp")
+	if err != nil {
+		dir = simapp.DefaultNodeHome
+	}
+	defer os.RemoveAll(dir)
+
+	return dir
+}