[WIP] Add admin view for mentors status

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Please create an admin view (only admin can access) to view the users who approved as mentors but never change their status the active

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[moshfeu]

@copilot so far is great

1. Now please add a button to submit a reminder email to set themselves as active so mentees could reach them
   A. Once reminder sent, flag that user and replace the button with "reminder sent at..."
2. Please add a column for application submitted date