feat!: implement leveling module

[HeadTriXz]

Part of #13 and closes #10.

Implements the leveling system and adds a View Rank user command. People can level up by participating in voice channels or sending messages.

[codecov]

Codecov Report

Patch coverage: 98.02% and project coverage change: +1.27% 🎉

Comparison is base (3a3ede0) 93.94% compared to head (dc19b1b) 95.21%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #49      +/-   ##
==========================================
+ Coverage   93.94%   95.21%   +1.27%     
==========================================
  Files          70       76       +6     
  Lines        5843     6892    +1049     
  Branches      509      615     +106     
==========================================
+ Hits         5489     6562    +1073     
+ Misses        354      330      -24     

Flag	Coverage Δ
barry	96.20% <97.83%> (+5.19%)	⬆️
core	94.30% <100.00%> (+0.05%)	⬆️
logger	100.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
apps/barry/src/index.ts	0.00% <0.00%> (ø)
apps/barry/src/Application.ts	100.00% <100.00%> (ø)
apps/barry/src/modules/general/index.ts	100.00% <100.00%> (ø)
...y/src/modules/leveling/commands/user/rank/index.ts	100.00% <100.00%> (ø)
apps/barry/src/modules/leveling/database.ts	100.00% <100.00%> (ø)
...barry/src/modules/leveling/events/messageCreate.ts	100.00% <100.00%> (ø)
...ry/src/modules/leveling/events/voiceStateUpdate.ts	100.00% <100.00%> (ø)
apps/barry/src/modules/leveling/index.ts	100.00% <100.00%> (ø)
apps/barry/src/utils/loadFolder.ts	97.76% <100.00%> (ø)
packages/core/src/Client.ts	100.00% <100.00%> (ø)
... and 13 more

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