Button to select an offline map file on the phone and move it at the right place

1. What is the general goal of the feature?
Yesterday I had to share a notice with new ODK user.
And I realize that that the explanation about where to put mbtiles in order to use it in the form is not so complicated for us but not so "basic user" friendly.

I thougt a button in the map entry of Collect settings menu, to select the mbtiles on the phone to automatically copy it into the right folder to get it work with my forms.

2. What are some example use cases for this feature?
This could be very helpfull and we could imagine a note, at the begining of any form (a kind of first use note), containing the url to download the mbtile needed for this form...
Should be get for vector tiles too.

3. What can you contribute to making this feature a reality?
I do not have any dev skill... and no Idea about the complexity of such a development.
But we should discuss about the possibility to host french student working on such things we would like to use and share it with the community.