ci: cmake refine, prepare for conan/vcpkg

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[codecov[bot]]

Codecov Report

Merging #231 (2adf92e) into master (b8cae85) will increase coverage by 0.07%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #231      +/-   ##
==========================================
+ Coverage   97.31%   97.39%   +0.07%     
==========================================
  Files          34       34              
  Lines        2572     2572              
==========================================
+ Hits         2503     2505       +2     
+ Misses         69       67       -2     

see 1 file with indirect coverage changes