Improve integration import by unifying the import into a single flow, user triggered flow

When configuring integration with accounting we need to add logic that allows the user to import data directly by clicking on a button for each synchronization selection or a bulk import.

Button can only be available if Switch is Active - if a button is clicked and synchronization is in progress, other sync buttons must be disabled - when syncing, the button should display a loader or text (Data is imported...) so the user easily understands what is happening.

When users want to import data, they have to go many different places and this can result in importing in a wrong order