feat: add --exclude-core-addons flag

[yajo]

With this feature, together with --select-found, you can find all non-core addons automatically.

@moduon MT-1075

[yajo]

@sbidoul CI is broken... 😅

[sbidoul]

One PR per feature, please.

[yajo]

OK, original PR is now in #54, and this one depends on it. I marked it as draft in the mean time.

(I do it like this to avoid having to rewrite the test, and also because I need to deploy both patches and it's easier for me to have both in the same branch).

[sbidoul]

Yeah, my point is that these features are logically independent, it's better to have a test for each individually.
But an integration may be useful too, as you prefer.

[codecov]

Codecov Report

Merging #53 (1915a3e) into main (a060a18) will increase coverage by 0.79%.
The diff coverage is 60.00%.

@@            Coverage Diff             @@
##             main      #53      +/-   ##
==========================================
+ Coverage   83.77%   84.57%   +0.79%     
==========================================
  Files          17       17              
  Lines         561      564       +3     
  Branches      114      115       +1     
==========================================
+ Hits          470      477       +7     
+ Misses         71       68       -3     
+ Partials       20       19       -1     

Impacted Files	Coverage Δ
src/manifestoo/main.py	78.12% <60.00%> (+3.72%)	⬆️

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[yajo]

docs added

[sbidoul]

Thanks!