Add a new self-hosted sites only Comments list screen

[crazytonyli]

Description

Part of https://linear.app/a8c/project/rest-api-comments-674ac0bdde3b

The new screens will be under a local feature flag, which is hard-coded to be on in local development builds.

comment-list.mp4

[dangermattic]

	3 Warnings
⚠️	Modules/Package.swift was changed without updating its corresponding Package.resolved. If the change includes adding, removing, or editing a dependency please resolve the Swift packages as appropriate to your project setup (e.g. in Xcode or by running swift package resolve). If the change to the Package.swift did not modify dependencies, ignoring this warning should be safe, but we recommend double checking and running the package resolution just in case. .
⚠️	This PR is larger than 500 lines of changes. Please consider splitting it into smaller PRs for easier and faster reviews.
⚠️	This PR is assigned to the milestone 27.2. This milestone is due in less than 4 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

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[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
	Configuration	Release-Alpha
	Build Number	33738
	Version	PR #25890
	Bundle ID	org.wordpress.alpha
	Commit	a62c6c1
	Installation URL	1e09elkd44q28

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[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
	Configuration	Release-Alpha
	Build Number	33738
	Version	PR #25890
	Bundle ID	com.jetpack.alpha
	Commit	a62c6c1
	Installation URL	3atlak6i3ula0

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