feat: new backpack

[sdilauro]

• Improve layout
• Update wearable items according figma
• Create filters with main categories and sub categories
• One-click to equip

Need to fix:

• Color picker panel
• Equip button

Known issue: #210

This PR includes a fix for the emotes on Mobile too. It just changes the import of the assets.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (327982c) 48.27% compared to head (a1f7a7c) 50.86%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #200      +/-   ##
==========================================
+ Coverage   48.27%   50.86%   +2.58%     
==========================================
  Files         142      142              
  Lines       17215    17215              
==========================================
+ Hits         8311     8756     +445     
+ Misses       8904     8459     -445     

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[sdilauro]

line 120 (_update_category_icon):
change "res://assets/wearable_categories/" to "res://assets/ui/wearable_categories/" to fix.