Polish for FOMOD UI

[Patriot99]

#600

Language.pl.resx.

Polish UI for FOMOD.

[codecov]

Codecov Report

Merging #726 (764313b) into main (4b9aabc) will increase coverage by 64.96%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           main     #726       +/-   ##
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+ Coverage      0   64.96%   +64.96%     
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  Files         0      558      +558     
  Lines         0    17467    +17467     
  Branches      0     1225     +1225     
=========================================
+ Hits          0    11348    +11348     
- Misses        0     5796     +5796     
- Partials      0      323      +323     

Flag	Coverage Δ
Linux	64.20% <ø> (?)
Windows	64.16% <ø> (?)
clean_environment_tests	64.95% <ø> (?)

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see 558 files with indirect coverage changes

[Sewer56]

Looks good to me.

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Note:

The original English localization uses 'Next' [Następny] and 'Previous' [Poprzedni]; which is more formal/robotic.

The PR uses the words Dalej [onward/proceed] and Wstecz [back(wards)], which are more informal and commonly found on install wizards (thus within user expectation). Since the FOMOD installer is effectively an install wizard, I think it's more appropriate to use what is in this PR.

In that vein, I'm wondering if we should change the English locale to say 'Back' instead of 'Previous'. It 'feels' more user friendly, so I figured I'd ask @captainsandypants

[Patriot99]

I will add from myself:
For me, Back (Wstecz) is more suitable than Previous (Poprzedni). I also took into account that this is an installation wizard where you usually see Back (Wstecz) and Next (Dalej) rather than Previous (Poprzedni). When translating, I change the words that fit in Polish, rather than literally translating a word from English to Polish. A normal user will not check the source code, but only what he sees at the moment. It's all about good word choice and making sure everything is understandable. I know from experience that people will complain if the word does not fit in a particular place.

[captainsandypants]

This all makes sense, happy to change.