Added Trademarks check with acronym allowed

[davidperezgar]

Fixes #464

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message.

Co-authored-by: davidperezgar <davidperez@git.wordpress.org>
Co-authored-by: ernilambar <rabmalin@git.wordpress.org>
Co-authored-by: swissspidy <swissspidy@git.wordpress.org>
Co-authored-by: frantorres <frantorres@git.wordpress.org>
Co-authored-by: dd32 <dd32@git.wordpress.org>

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.

[davidperezgar]

There were changes in WordPress Foundation Trademark's, and we have to cover in this PR.

[davidperezgar]

Please don't merge yet as we need to clarify to the Foundation the trademark changes.

[davidperezgar]

Result of conversations:

The current status-quo of not allowing wp- in slugs is fine, no need to change that, but if they use it in their plugin name that’s fine.

[davidperezgar]

After our Plugin Review Meeting, we were agreed that this PR can be published. Please review and accept it!