feat(commands): add $param to be parsed in filters

[sogehige]

Fixes https://discord.com/channels/317348946144002050/317349069024395264/794732878595752016

CHECKLIST

• I read contributing docs

[codecov]

Codecov Report

Merging #4495 (2fa114f) into master (527fc38) will increase coverage by 0.34%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4495      +/-   ##
==========================================
+ Coverage   56.33%   56.67%   +0.34%     
==========================================
  Files         146      146              
  Lines       14567    14567              
  Branches     2924     2924              
==========================================
+ Hits         8206     8256      +50     
+ Misses       6361     6311      -50     

Flag	Coverage Δ
mysql	55.92% <ø> (-0.30%)	⬇️
postgres	56.56% <ø> (+0.35%)	⬆️
sqlite	56.12% <ø> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
src/bot/helpers/checkFilter.ts	94.11% <ø> (ø)
src/bot/systems/customcommands.ts	82.43% <0.00%> (+0.48%)	⬆️
src/bot/systems/points.ts	70.37% <0.00%> (+7.09%)	⬆️
src/bot/systems/levels.ts	62.15% <0.00%> (+10.35%)	⬆️

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