[Meson] Add an option to compile or not the binaries

[amontoison]

@jfowkes @nimgould
I added an option to the Meson build so that the binaries are no longer compiled by default.
I believe the majority of users are not interested in these files, and making their compilation optional seems appropriate from my point of view.

I will wait a green light of you to merge the PR.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 43.40%. Comparing base (e2f6b7b) to head (9208f10).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #360      +/-   ##
==========================================
+ Coverage   41.84%   43.40%   +1.55%     
==========================================
  Files         325      309      -16     
  Lines      167628   161612    -6016     
  Branches    58076    55897    -2179     
==========================================
  Hits        70143    70143              
+ Misses      79992    73976    -6016     
  Partials    17493    17493              

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[nimgould]

I don't know what you mean here, does Julia not need binaries? Sorry for my ignorance

[amontoison]

Julia only need the shared libraries, just like Python.
They don't need any executable.

[nimgould]

OK, I guess it is just a matter of terminology, but here in fortan-land executables are components of libraries. Again, not needed here except for the main programs