Improvement: Mark fetchcontent cmake options as advanced

[lenaploetzke]

Closes #2239

Describe your changes here:
The cmake options list in ccmake got very long which is why i marked all fetchcontent cmake options as advanced. I think those options are not set very often.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.30%. Comparing base (dfe6c20) to head (c06e5e7).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2238   +/-   ##
=======================================
  Coverage   78.30%   78.30%           
=======================================
  Files         114      114           
  Lines       19117    19117           
=======================================
  Hits        14969    14969           
  Misses       4148     4148           

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