Signposter and sentry metrics update

[stefanceriu]

This set of commits refactor how we gather sentry metrics

As per element-hq/element-meta#3055

[codecov]

Codecov Report

❌ Patch coverage is 30.33708% with 62 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.76%. Comparing base (e06baf6) to head (2fe33e0).
⚠️ Report is 16 commits behind head on develop.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
ElementX/Sources/Application/AppCoordinator.swift	0.00%	32 Missing ⚠️
...ementX/Sources/Services/Analytics/Signposter.swift	44.18%	24 Missing ⚠️
...ources/Services/UserSession/UserSessionStore.swift	0.00%	3 Missing ⚠️
ElementX/Sources/Other/SDKListener.swift	0.00%	2 Missing ⚠️
...X/Sources/Screens/Timeline/TimelineViewModel.swift	80.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5020      +/-   ##
===========================================
- Coverage    79.42%   78.76%   -0.67%     
===========================================
  Files          907      907              
  Lines        67745    68844    +1099     
===========================================
+ Hits         53806    54223     +417     
- Misses       13939    14621     +682     

Flag	Coverage Δ
unittests	71.65% <30.33%> (-0.07%)	⬇️

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