Make it easier to find the prototyping board mfmc file for workshop participants.

[DocMoebiuz]

Is your feature request related to a problem? Please describe.
During the last workshop I realized, that it takes a lot of effort to find and download the prototyping board mfmc file from GitHub.

Describe the solution you'd like
We can bundle board configs for community boards, so we can also bundle configs for official mobiFlight boards.
The user then clicks on the upload button and can select the config there.