feat: simapp/v2 (#20412)

Co-authored-by: marbar3778 <marbar3778@yahoo.com>
Co-authored-by: Marko <marko@baricevic.me>
Co-authored-by: Likhita Polavarapu <78951027+likhita-809@users.noreply.github.com>
Co-authored-by: unknown unknown <unknown@unknown>

simapp/v2/export.go

@@ -0,0 +1,10 @@
+package simapp
+
+import (
+	servertypes "github.com/cosmos/cosmos-sdk/server/types"
+)
+
+// ExportAppStateAndValidators exports the state of the application for a genesis file.
+func (app *SimApp) ExportAppStateAndValidators(forZeroHeight bool, jailAllowedAddrs, modulesToExport []string) (servertypes.ExportedApp, error) {
+	panic("not implemented")
+}