[XB] Profile Post & Comment Writing Before Registering 2.0.0

Allow users to write profile posts and comments before they register!

Features:​

• Let users write posts and comments on profiles even if they're not registered yet.
• After writing a post or comment, users are redirected to the registration page. Upon successful registration, the content is published on their behalf.

Important Notes:​

• Ensure the "unregistered / unconfirmed" group does not have "No" for permissions like "Post new profile posts" or "Comment on profile post."
• The "Registered" group should have "Yes" for these permissions.

FAQ:​

• Guests can’t write posts/comments: Ensure privacy settings are not limiting posting and that the registered group has permissions to post/comment.