Automate Google Play deployment

[soygul]

1) Create a release in GitHub. 2) Read the version no from that release from GitHub and temporarily modify versionCode/versionName in gradle config accordingly. Alternatively, use env vars. 3) Deploy to Google Play store using the changelog from github releases.

This can be done using google/github clients libs.

[soygul]

Deploying to GitHub Releases and Play Store Alpha can be done with:

1. Use CLI tools store inside the repo in Dockerfile:
   • GitHub: https://github.com/aktau/github-release
   • Play:
     • https://github.com/Triple-T/gradle-play-publisher
     • https://github.com/fastlane/fastlane/tree/master/supply#readme (Ruby!)
     • https://github.com/jeduan/playup (node.js)
2. Create /devops (or /build) repo and use Go SDKs for all of these stuff in that repo and depend on a version of it from Dockerfile. More long term solution (+) but complicates things further (-).

[soygul]

• Alpha Release: commits to master
• Beta Release: tags
• Production Release: manually promote an alpha or beta release

We'll also need to copy GitHub release notes from tags to Play Store beta so this might be a task in /build. We can even create the GitHub release with custom params via /build.