Block Editor: Register Settings Sidebar

[n7studios]

Summary

For block editor users, registers a block editor native plugin sidebar for a Page, Post or Custom Post's settings, replacing the existing metabox:

Non-block editor users i.e. those using the Classic Editor continue to see the metabox options as before:

Testing

Tests are split across PRs for ease of review

• Forms: []
• Landing Pages: []
• Member Content: []

Checklist

• I have written a test and included it in this PR
• I have run all tests and they pass
• The code passes when running the PHP CodeSniffer
• Code meets WordPress Coding Standards for PHP, HTML, CSS and JS
• Security and Sanitization requirements have been followed
• I have assigned a reviewer or two to review this PR (if you're not sure who to assign, we can do this step for you)