Comment Detail Redesign: Implement trash & delete

[alpavanoglu]

Fixes #18999

This is the final PR to be merged on the feature branch. After this one, we should test the feature branch all together and update the Release Notes.

To test:

1. Log in to a WP Account
2. In My Site, select Menu
3. Comments
4. Select any comment
5. Tap on trash/delete button.
6. Validate if trash moves the comment.
7. Tap on one of the status options (Approve/Pending/Spam) to see if button updates from Delete to Trash again.
8. Verify if Delete permanently deletes the comment.

Regression Notes

1. Potential unintended areas of impact
   N/A

2. What I did to test those areas of impact (or what existing automated tests I relied on)
   N/A

3. What automated tests I added (or what prevented me from doing so)
   N/A

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[alpavanoglu]

I have removed SingleButtonTableViewCell.swift as I've found it is not being used in the codebase. It is not related to my changes but since it is just a deletion, it wouldn't need any testing or reviewing.

[wpmobilebot]

You can test the changes in Jetpack from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr19358-838cfdd on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wpmobilebot]

You can test the changes in WordPress from this Pull Request by:

• Clicking here or scanning the QR code below to access App Center
• Then installing the build number pr19358-838cfdd on your iPhone

If you need access to App Center, please ask a maintainer to add you.

[wargcm]

LGTM 🚀