This add ".github/workflows/pr-build.yml" to build on every change to the CI Build to check if there's no error when it got modified. And also remove "fastlane/**" because that's not related to the ReVanced Manager's code
Gradle take up so much space in cache that it wouldn't make sense for us to cache it since we are rapidly hitting the cache limit every time.
Co-authored-by: Ushie <ushiekane@gmail.com>