[ORGA] github best practices

[tzabbi]

We want to implement good practices for a github repository like, labels, issue management, ...

AC:

• Community stanards are implemented.
• Apporiate license is used
• Workflow is defined

Notes:

• search for "community standards"

[Marcel2603]

How to Review and all information are in the description of https://github.com/ESELdevelopment/ecmanager/pull/10

[Marcel2603]

@tzabbi @LaurinStreng @Jess96

Pls have a look :) You can also add your emails to security and code_of_conduct :D

@tzabbi i don't know how to remove a reviewer LOL