Choose the custom dimensions you want to import from GA

[mattab]

Feedback from customer:

we wanted to import our historic Google Analytics Data into Matomo, but we haven't been able to do it yet, as in Google Analytics 360 we had set up 200 custom dimensions (mainly not needed placeholders). The import plugin needs to have all custom dimensions set up, but this we don't want to do, as it would unnecessary increase the database structure.
Can we add following functionality for the GA import plugin:

• choose the custom dimensions you want to import and map then to a custom dimension in matomo