Implement live location sharing start and stop actions in the UI

[Velin92]

Okay so this PR finally connects the CTAs that were already in the app about LLS with its manager.

• It adds a bunch of alerts after the permissions are determined when selecting the live location sharing option from the location screen (a disclaimer about your privacy + a duration selector) and then calls the start function for the room
• it connects the stop function to the live location timeline item view stop button
• Adds a bunch of tests to the LocationSharingScreenViewModel

[codecov]

Codecov Report

❌ Patch coverage is 95.45455% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.49%. Comparing base (d9a480b) to head (f74388a).
⚠️ Report is 5 commits behind head on develop.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...cationSharing/LocationSharingScreenViewModel.swift	97.67%	1 Missing ⚠️
...X/Sources/Screens/Timeline/TimelineViewModel.swift	50.00%	1 Missing ⚠️
...melineItemViews/LiveLocationRoomTimelineView.swift	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5349      +/-   ##
===========================================
+ Coverage    74.46%   74.49%   +0.03%     
===========================================
  Files          800      800              
  Lines        53590    53639      +49     
===========================================
+ Hits         39906    39960      +54     
+ Misses       13684    13679       -5     

Flag	Coverage Δ
unittests	64.47% <95.45%> (+0.04%)	⬆️

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[stefanceriu]

lgtm, nice 👍