More work on the build scripts

[DemoBytom]

To contnue from #2 - need to work on the GitFlow helper methods

• - Add Release method that creates and finishes the release branch
• - Add Hotfix method that creates and finishes the hotfix/ branch
• - Rework method that starts and finishes the feature/ branch
• - Finishing a release or hotfix need to properly tag the main branch merge commit.
• - All methods that finish a branch should first run build/test to check if they CAN finish it.
• - Maybe add automatic push to the repo on success?