Fastlane

[tinypell3ts]

Proposed changes

This PR adds a Fastlane flag for installing Fastlane on your machine and adds a fastlane folder to the project root.

The initial setup includes 4 lanes: test_setup - To ensure Fastlane is setup correct. version_bump - bump the version and commit to a Github repository. github_release - builds an iOS and Android version, creates a release and upload assets. firebase_release - uploads an .ipa and .apk to a chosen firebase project.

Notes

There is room to do so much more, however, I feel this is a good starting point. I split out the beta release lane into three separate lanes. This allows you to use them individually depending on your requirements.