RoomScreenViewModel refactor part 2

[Velin92]

Also added more tests and also fixes #2991

[github-actions]

	Warnings
⚠️	Some of the commits are missing ticket numbers. Please consider squashing all commits that don't have a tracking number.
⚠️	You seem to have made changes to views. Please consider adding screenshots.

Generated by 🚫 Danger Swift against 7f5032b

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
2.9% Duplication on New Code

See analysis details on SonarCloud

[pixlwave]

✨🧹✨

[codecov]

Codecov Report

Attention: Patch coverage is 82.29167% with 17 lines in your changes missing coverage. Please review.

Project coverage is 77.63%. Comparing base (c71da91) to head (7f5032b).
Report is 3 commits behind head on develop.

Files	Patch %	Lines
...ces/Screens/RoomScreen/RoomScreenCoordinator.swift	37.50%	5 Missing ⚠️
...urces/Screens/RoomScreen/RoomScreenViewModel.swift	85.71%	5 Missing ⚠️
...X/Sources/Screens/RoomScreen/View/RoomScreen.swift	62.50%	3 Missing ⚠️
...X/Sources/Screens/Timeline/TimelineViewModel.swift	33.33%	2 Missing ⚠️
.../Sources/Screens/RoomScreen/RoomScreenModels.swift	50.00%	1 Missing ⚠️
...ine/View/Style/TimelineItemBubbledStylerView.swift	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3169      +/-   ##
===========================================
+ Coverage    77.30%   77.63%   +0.32%     
===========================================
  Files          716      717       +1     
  Lines        55976    56143     +167     
===========================================
+ Hits         43272    43585     +313     
+ Misses       12704    12558     -146     

Flag	Coverage Δ
unittests	68.42% <82.29%> (+0.23%)	⬆️

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