MAINT: Setup new way of releasing

[sappelhoff]

• closes MAINT: update release protocol --> versioning scheme #1197

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.46%. Comparing base (87eea28) to head (fdb4c60).
Report is 27 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1259      +/-   ##
==========================================
- Coverage   97.61%   97.46%   -0.16%     
==========================================
  Files          40       40              
  Lines        8685     8703      +18     
==========================================
+ Hits         8478     8482       +4     
- Misses        207      221      +14     

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[sappelhoff]

I also updated the release protocol: https://github.com/mne-tools/mne-bids/wiki/How-to-make-a-release