GT-2168 Performance Improvements for Language Filter

[frett]

• resolve the appLanguage on a background thread
• use remember to prevent a new flow from being created every time LocalAppLanguage.current is called
• switch to a LazyColumn implementation of DropdownMenu for the languages filter

[codecov]

Codecov Report

Merging #3193 (1a705d4) into develop (29cf871) will increase coverage by 0.02%.
The diff coverage is 29.41%.

@@             Coverage Diff             @@
##           develop    #3193      +/-   ##
===========================================
+ Coverage    32.76%   32.78%   +0.02%     
===========================================
  Files          428      428              
  Lines        10515    10519       +4     
  Branches      2302     2304       +2     
===========================================
+ Hits          3445     3449       +4     
  Misses        6513     6513              
  Partials       557      557              

Files	Coverage Δ
...c/main/kotlin/org/cru/godtools/base/AppLanguage.kt	25.00% <100.00%> (ø)
.../cru/godtools/ui/dashboard/tools/ToolsViewModel.kt	80.43% <80.00%> (-0.06%)	⬇️
...n/kotlin/org/cru/godtools/base/LocalAppLanguage.kt	0.00% <0.00%> (ø)
...org/cru/godtools/ui/dashboard/tools/ToolFilters.kt	49.45% <16.00%> (+1.06%)	⬆️

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