[Feature] Pinned message : render m.room.pinned events in timeline

[ganfra]

Content

Allow rendering of m.room.pinned events in timeline

Motivation and context

Closes #3271

Screenshots / GIFs

Tests

• Step 1
• Step 2
• Step ...

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request title will be used in the release note, it clearly define what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR

[github-actions]

📱 Scan the QR code below to install the build (arm64 only) for this PR.

If you can't scan the QR code you can install the build via this link: https://i.diawi.com/e8oLHr

[sonarcloud]

Quality Gate passed

Issues
0 New issues
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 33.33333% with 12 lines in your changes missing coverage. Please review.

Project coverage is 76.18%. Comparing base (798313c) to head (f9d337e).
Report is 1 commits behind head on develop.

Files	Patch %	Lines
...aries/eventformatter/impl/StateContentFormatter.kt	14.28%	11 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3276      +/-   ##
===========================================
- Coverage    76.20%   76.18%   -0.03%     
===========================================
  Files         1656     1656              
  Lines        39008    39021      +13     
  Branches      7567     7571       +4     
===========================================
+ Hits         29727    29729       +2     
- Misses        5355     5365      +10     
- Partials      3926     3927       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jmartinesp]

LGTM, thanks!

[jmartinesp]

Should this still be using the PR-Wip label?

[ganfra]

Should this still be using the PR-Wip label?

You're right, maybe not, it's kind of unrelated with the rest of the feature.