Add appVersion to RequestInfo

[rootulp]

Problem

In celestia-app v2 there is confusing logic in Info() to determine the app version.

celestia-app/app/app.go

Lines 511 to 536 in 4b34f8b

	// Info implements the ABCI interface. This method is a wrapper around baseapp's
	// Info command so that it can take the app version and setup the multicommit
	// store.
	//
	// Side-effect: calls baseapp.Init()
	func (app *App) Info(req abci.RequestInfo) abci.ResponseInfo {
	if height := app.LastBlockHeight(); height > 0 {
	ctx, err := app.CreateQueryContext(height, false)
	if err != nil {
	panic(err)
	}
	appVersion := app.GetAppVersionFromParamStore(ctx)
	if appVersion > 0 {
	app.SetAppVersion(ctx, appVersion)
	} else {
	app.SetAppVersion(ctx, v1)
	}
	}
	resp := app.BaseApp.Info(req)
	// mount the stores for the provided app version
	if resp.AppVersion > 0 && !app.IsSealed() {
	app.mountKeysAndInit(resp.AppVersion)
	}
	return resp
	}

Proposal

Consider adding AppVersion to RequestInfo