feat: stable enforce values validation

[wellwelwel]

Now, --ensure or -x flags check for:

• Invalid flags.
• Flags with required values, but with no value.
• Invalid values (--config, --envFile, --concurrency).
• Flags that don't use values, but have some values in them.
• Check the configuration files.

Note

Indirectly fixes the issue when importing .cjs or .js files with Bun, which was ignored in Unix systems.

---

Related:

• enforce option stage (Early Development) #703
• Version 3.0.0 (planned breaking changes and architecture improvements) #801

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.05%. Comparing base (593e650) to head (d1c2e1d).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #905      +/-   ##
==========================================
+ Coverage   98.98%   99.05%   +0.07%     
==========================================
  Files          36       37       +1     
  Lines        1767     1903     +136     
  Branches       11       12       +1     
==========================================
+ Hits         1749     1885     +136     
  Misses          9        9              
  Partials        9        9              

Flag	Coverage Δ
linux	98.89% <99.29%> (+0.02%)	⬆️
osx	98.94% <99.29%> (+0.02%)	⬆️
windows	98.94% <100.00%> (+0.08%)	⬆️

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