sqf: Add lint (S25) for count array comparisons

[PabstMirror]

e.g.

help[L-S25]: count array comparison
   ┌─ addons/common/functions/fnc_loadPersonLocal.sqf:33:35
   │
33 │         if (count _preferredSeats > 0) then {
   │                                   ^
   │
   = note: use `isNotEqualTo []`

[codecov]

Codecov Report

Attention: Patch coverage is 82.40000% with 22 lines in your changes missing coverage. Please review.

Project coverage is 68.7%. Comparing base (68d8a72) to head (9b25b91).

Files with missing lines	Patch %	Lines
libs/sqf/src/analyze/lints/s25_count_array_comp.rs	78.4%	20 Missing ⚠️
libs/sqf/src/analyze/inspector/commands.rs	92.3%	2 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
libs/sqf/src/analyze/inspector/mod.rs	93.6% <100.0%> (+<0.1%)	⬆️
...s/sqf/src/analyze/lints/s21_invalid_comparisons.rs	75.0% <100.0%> (ø)
libs/sqf/src/analyze/inspector/commands.rs	80.6% <92.3%> (+0.9%)	⬆️
libs/sqf/src/analyze/lints/s25_count_array_comp.rs	78.4% <78.4%> (ø)

... and 3 files with indirect coverage changes