Integration plugin between Reactive Commerce and Accelerated text

• Allow to upload CSV (Column names matching hardcoded pattern for now)
• Allow to select plan type
• Import will create Products with information and automatically create descriptions

clone it into <reaction admin>/import/plugins/custom

NOTE - at the moment i18n is in the middle of refactoring in ReactionCommerce. To be able to do translations, translations folder needs to be added to reaction project, under src/plugins/custom/acc-text-import and registered inside registerPlugins.js