feat: implement mute command

[HeadTriXz]

Closes #16, part of #24.

• adds a /mute command.
• adds missing permission to /kick
• adds a getDuration method which parses the duration from a human readable string (e.g. 1 hour 5 minutes)

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01% 🎉

Comparison is base (22e2f05) 99.28% compared to head (df7fa0e) 99.29%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
+ Coverage   99.28%   99.29%   +0.01%     
==========================================
  Files         107      109       +2     
  Lines       12283    12514     +231     
  Branches     1321     1348      +27     
==========================================
+ Hits        12195    12426     +231     
  Misses         88       88              

Flag	Coverage Δ
barry	98.96% <100.00%> (+0.02%)	⬆️
core	99.92% <ø> (ø)
logger	100.00% <ø> (ø)

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

Files Changed	Coverage Δ
...odules/moderation/commands/chatinput/kick/index.ts	100.00% <100.00%> (ø)
...odules/moderation/commands/chatinput/mute/index.ts	100.00% <100.00%> (ø)
...ry/src/modules/moderation/functions/getDuration.ts	100.00% <100.00%> (ø)
.../src/modules/moderation/functions/getLogContent.ts	100.00% <100.00%> (ø)

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