✨ add release drafter workflow and config

[burgholzer]

Description

Solves #91

A CI failure is expected since the workflow is not yet on main.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[codecov]

Codecov Report

Merging #124 (11ff581) into main (c01fa39) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##            main    #124   +/-   ##
=====================================
  Coverage   85.2%   85.2%           
=====================================
  Files         20      20           
  Lines       1362    1362           
  Branches     190     190           
=====================================
  Hits        1161    1161           
  Misses       201     201           

Flag	Coverage Δ
cpp	79.5% <ø> (ø)
python	96.1% <ø> (ø)

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