moved fastlane to repo root

[samtinel]

The fastlane directory is at the wrong directory level, it has to be placed at the repositories root.

https://f-droid.org/docs/All_About_Descriptions_Graphics_and_Screenshots>/#fastlane-structure This structure must be placed at one of the following locations >from the repository’s root:

metadata/ fastlane/metadata/android/

[lloydtorres]

Thanks for catching this!