Add simplified sliding sync toggle to developer options

[jmartinesp]

Content

Add simplified sliding sync toggle to developer options. Make sure it's reset when logged out.

Motivation and context

This will let us test the new SSS implementation in EXA too.

Screenshots / GIFs

In the PR.

Tests

• Log into an account in your own homeserver using the latest synapse sources.
• Go to settings -> developer settings, enable simplified sliding sync.
• Kill and restart the app.
• The app will now use simplified sliding sync instead of the SS proxy.

Note you can also test this with matrix.org, but the deployed implementation fails to sync properly at the moment and ends up in a fail -> retry endless loop.

Tested devices

• Physical
• Emulator
• OS version(s): 14

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/XCgav4

[codecov]

Codecov Report

Attention: Patch coverage is 61.76471% with 13 lines in your changes missing coverage. Please review.

Project coverage is 76.12%. Comparing base (947480f) to head (eec0e37).
Report is 5 commits behind head on develop.

Files	Patch %	Lines
...droid/features/logout/impl/DefaultLogoutUseCase.kt	0.00%	6 Missing ⚠️
...eferences/impl/store/DefaultAppPreferencesStore.kt	0.00%	4 Missing ⚠️
...ndroid/features/logout/impl/SessionLogoutModule.kt	0.00%	1 Missing ⚠️
...ences/impl/developer/DeveloperSettingsPresenter.kt	83.33%	0 Missing and 1 partial ⚠️
...references/impl/developer/DeveloperSettingsView.kt	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3222      +/-   ##
===========================================
- Coverage    76.14%   76.12%   -0.02%     
===========================================
  Files         1645     1647       +2     
  Lines        38757    38780      +23     
  Branches      7527     7528       +1     
===========================================
+ Hits         29512    29522      +10     
- Misses        5335     5346      +11     
- Partials      3910     3912       +2     

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

[ganfra]

LGTM!
I just added a change on the ClientBuilder to avoid mistakes. Let me know what you think of it.

[jmartinesp]

Thanks for taking over the PR @ganfra , your changes work and make sense to me.

[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