Setup automated releases

[jachinte]

[jachinte]

Option 1 is gradle-gitflow. It assigns a pre-release version based on the closest tag and the type of branch. It does not increase/decrease the version on merge, which would be ideal. e.g., every time a feature is merged into develop, the minor version should increase.

[jachinte]

Option 2 is gradle-semantic-build-versioning. It is not integrated with git-flow but it does bump the version automatically, which is what I wanted.