v0.1.1-alpha pre-release

What is new:

• The copy button is now styled differently as well as it only shows itself when the mouse hovers over the MultiCodeBlock
• Added more community features to the project
  • README.md renewed
  • CONTRIBUTING.md added
  • CITATION.cff added
  • Issue Templates added

Fixes/ Changes:

• The input of non-english characters resulted in a wrong representation of them. Now every character is read as an UTF-8 character.

• Arrays are only in the [ ]-Syntax

• Unnecessary css classes removed