Add fast release strategy

[Pog3k]

in order to have faster releases available we want to implement the new release strategy as discussed:

How to fast release, discussion:

• Decided new release model. Every 2 Weeks a new alpha Release with increasing last digit. Example 0.27.0-alpha.1.
• Hot fixes shall be done on a seperate branch which shall then be tagged with the new hotfix release. Example 0.26.1
• Hot fix branches will be then merged back to master and are then automatically in the new alpha releases.

[Pog3k]

Discussed to use github actions. Cron jobs can be created there Github actions documentation can be found here github workflows Maybe it can be combined with an already existing GH action GH auto-release