Add linter analysis workflow

[Hind-M]

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@@           Coverage Diff           @@
##             main       #9   +/-   ##
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  Coverage        ?   82.45%           
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  Files           ?       36           
  Lines           ?     1755           
  Branches        ?        0           
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  Hits            ?     1447           
  Misses          ?      308           
  Partials        ?        0           

Flag	Coverage Δ
unittests	82.45% <ø> (?)

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[Hind-M]

I removed all linter failures, warnings are still there, but that shouldn't prevent from merging this as some of them are not relevant or not worth handling (in tests for example)...
They can also be addressed progressively in other PRs.