Add button to layouts for layout switch

[TheRulisp]

Hello. I develop an app for tickets sale and I find your plugin very helpful for my needs.

But there's a problem with multilanguage part. User can input data in russian and in english(and may be sometimes later, in chinese). So, if we could define list of layouts on plugin initialization and then add a button to layouts for fast layout switch, it would be great!

Consider it as feature request:)