Store compile commands

[Adda0]

This PR reverts the removal of storing compile commands by CMake introduced in #315.

This option creates a compile_commands.json compilation database file in build/ which, beside others, allows linters to work properly with header files and other dependencies of each file.

[codecov]

Codecov Report

Patch coverage: 91.12% and project coverage change: +1.65% 🎉

Comparison is base (74fa0f3) 70.86% compared to head (da288df) 72.52%.
Report is 27 commits behind head on devel.

❗ Current head da288df differs from pull request most recent head 7cbfdca. Consider uploading reports for the commit 7cbfdca to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##            devel     #322      +/-   ##
==========================================
+ Coverage   70.86%   72.52%   +1.65%     
==========================================
  Files          33       33              
  Lines        4191     4160      -31     
  Branches      965      959       -6     
==========================================
+ Hits         2970     3017      +47     
+ Misses        845      763      -82     
- Partials      376      380       +4     

Files Changed	Coverage Δ
include/mata/nfa/nfa.hh	100.00% <ø> (+11.53%)	⬆️
src/nfa/nfa.cc	67.75% <0.00%> (+8.06%)	⬆️
src/nfa/operations.cc	65.07% <0.00%> (ø)
src/strings/nfa-noodlification.cc	71.49% <33.33%> (ø)
src/nfa/delta.cc	89.25% <93.46%> (+10.38%)	⬆️
include/mata/nfa/delta.hh	86.11% <100.00%> (-0.31%)	⬇️

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