chore(deps): Upgrade to modern typedoc@0.22.x

[mdornseif]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Typedoc 0.22 offers several features over 0.19. Also the esily accessible documentation is all for 0.22.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (586cdb3) to head (4fb787e).

Additional details and impacted files

@@            Coverage Diff            @@
##            master      #266   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines          279       279           
  Branches        42        42           
=========================================
  Hits           279       279           

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