[DEBUG] Adding debug dump events / correcting IO methods.

[Neloreck]

Adding debug dump event on debug panel click, possible extension with keybind.
Collects large JSON file with state of the game.

Changes

• Reformat code, remove not used imports
• Update types
• Update file save-load methods
• Add debug manager and dumping methods/event
• Handle debug dump in managers
• Add more tests
• New database manager for debug dump
• toJSON -> produce valid json

Checklist

• tests are included
• documentation is changed or added

[codecov]

Codecov Report

Attention: Patch coverage is 90.78212% with 33 lines in your changes missing coverage. Please review.

Project coverage is 72.96%. Comparing base (d892bf5) to head (d2e7f83).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/engine/core/managers/weather/WeatherManager.ts	56.60%	23 Missing ⚠️
...gine/core/ui/debug/sections/DebugGeneralSection.ts	50.00%	4 Missing ⚠️
...gine/core/managers/statistics/StatisticsManager.ts	94.91%	3 Missing ⚠️
...c/engine/core/managers/database/DatabaseManager.ts	92.85%	2 Missing ⚠️
src/engine/core/utils/fs/fs_io.ts	95.23%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #109      +/-   ##
==========================================
+ Coverage   72.81%   72.96%   +0.14%     
==========================================
  Files        1304     1308       +4     
  Lines       36752    36951     +199     
  Branches     6254     6260       +6     
==========================================
+ Hits        26762    26962     +200     
+ Misses       9990     9989       -1     

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