Add the inviter to JoinRoomScreen when it's an invite.

[pixlwave]

This PR extracts the invite label from the home screen invite cells into their own view (with a dedicated model to pre-compute the attributed string) and adds it to the JoinRoomScreen to match Android.

[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 b4dae60

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

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

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 94.20290% with 4 lines in your changes missing coverage. Please review.

Project coverage is 77.93%. Comparing base (5a4d21a) to head (b4dae60).

Files	Patch %	Lines
...s/Screens/JoinRoomScreen/View/JoinRoomScreen.swift	50.00%	3 Missing ⚠️
...reens/JoinRoomScreen/JoinRoomScreenViewModel.swift	90.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3093   +/-   ##
========================================
  Coverage    77.92%   77.93%           
========================================
  Files          703      704    +1     
  Lines        54436    54460   +24     
========================================
+ Hits         42421    42444   +23     
- Misses       12015    12016    +1     

Flag	Coverage Δ
unittests	68.54% <94.20%> (+<0.01%)	⬆️

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