refactor: use arcstr except for IDs

[mmta]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.80%. Comparing base (2fee2b0) to head (f6e9a02).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #64   +/-   ##
=======================================
  Coverage   95.79%   95.80%           
=======================================
  Files          33       33           
  Lines        5047     5050    +3     
=======================================
+ Hits         4835     4838    +3     
  Misses        212      212           

Flag	Coverage Δ
unittests	95.80% <100.00%> (+<0.01%)	⬆️

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

Files	Coverage Δ
server/src/backlog/mod.rs	96.86% <100.00%> (+0.03%)	⬆️
server/src/bin/dsiem-backend.rs	88.48% <100.00%> (ø)
server/src/directive.rs	98.88% <100.00%> (ø)
server/src/event.rs	100.00% <100.00%> (ø)
server/src/filter/cache.rs	96.15% <100.00%> (ø)
server/src/messenger.rs	95.25% <100.00%> (ø)
server/src/parser.rs	100.00% <ø> (ø)
server/src/rule.rs	99.88% <100.00%> (-0.01%)	⬇️