Self-hosted userlist

[nbradbury]

This PR adds a screen for the self-hosted user list. Note that dummy data is being used here. Actual data requested via wordpress-rs will come later.

To test:

• Enable self_hosted_users in debug settings
• Switch to a self-hosted site
• Note that a new "Users" item appears
• Tap on that and verify the screen with dummy data looks fine
• Switch to a non-self-hosted site and verify the "Users" item doesn't appear
• View the various Compose previews of the UserListScreen and verify they look fine (note that remote avatar images won't load in the preview)

This is ready for review but should not be merged because I use an image from my blog in the preview. I'll remove that after the PR is approved and then I'll merge it.

[dangermattic]

	5 Warnings
⚠️	strings.xml files should only be updated on release branches, when the translations are downloaded by our automation.
⚠️	This PR is larger than 300 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.
⚠️	Class SelfHostedUsersViewModel is missing tests, but unit-tests-exemption label was set to ignore this.
⚠️	Class SelfHostedUserState is missing tests, but unit-tests-exemption label was set to ignore this.
⚠️	PR is not assigned to a milestone.

Generated by 🚫 Danger

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress by scanning the QR code below to install the corresponding build.

	App Name	WordPress
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21264-08671a4
	Commit	08671a4
	Direct Download	wordpress-prototype-build-pr21264-08671a4.apk

Note: Google Login is not supported on these builds.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack by scanning the QR code below to install the corresponding build.

	App Name	Jetpack
	Flavor	Jalapeno
	Build Type	Debug
	Version	pr21264-08671a4
	Commit	08671a4
	Direct Download	jetpack-prototype-build-pr21264-08671a4.apk

Note: Google Login is not supported on these builds.

[codecov]

Codecov Report

Attention: Patch coverage is 2.18341% with 224 lines in your changes missing coverage. Please review.

Project coverage is 40.34%. Comparing base (8152531) to head (08671a4).

Files with missing lines	Patch %	Lines
...id/ui/selfhostedusers/SelfHostedUserComposables.kt	0.00%	65 Missing ⚠️
...ndroid/ui/selfhostedusers/SelfHostedUsersScreen.kt	0.00%	65 Missing ⚠️
...ordpress/android/ui/selfhostedusers/SampleUsers.kt	0.00%	64 Missing ⚠️
...oid/ui/selfhostedusers/SelfHostedUsersViewModel.kt	0.00%	19 Missing ⚠️
...id/ui/mysite/items/listitem/SiteListItemBuilder.kt	33.33%	6 Missing ⚠️
...ava/org/wordpress/android/ui/ActivityLauncher.java	0.00%	3 Missing ⚠️
...ordpress/android/ui/mysite/SiteNavigationAction.kt	0.00%	1 Missing ⚠️
...s/android/ui/mysite/cards/ListItemActionHandler.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            trunk   #21264      +/-   ##
==========================================
- Coverage   40.46%   40.34%   -0.13%     
==========================================
  Files        1531     1535       +4     
  Lines       69831    70059     +228     
  Branches    11444    11493      +49     
==========================================
+ Hits        28259    28262       +3     
- Misses      39125    39350     +225     
  Partials     2447     2447              

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[sonarqubecloud]

Quality Gate passed

Issues
13 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

[nbradbury]

Closing in favor of #21275