💻 Add Ability to Rename Class

[Sidd-T]

Fixes #5965

Added functionality to rename a class, going off the instructions in the issue comments with direct editing from change on the input element.

I edited the exisiting rename_class function to directly send a request instead of opening a modal, as per the comment in the issue, but I believe it may be good to add a confirmation modal as well, let me know

Also, I wasn't sure what to do with the rename_class in the teachers.ts file, which does not seemed to be used at all, so I left it unchanged

How to test

Follow these steps to verify this PR works as intended:

• Log in as a teacher
• create a class
• in the customize class page, edit the input box, and click outside the box or press enter to confirm
• verify the name has been changed by going back

Dev Testing
https://github.com/user-attachments/assets/422caab4-89d8-4d75-8a08-03899de1d5bb

Checklist

• Contains one of the PR categories in the name
• Describes changes in the format above
• Links to an existing issue or discussion
• Has a "How to test" section

[Felienne]

Wow thanks for the work and the very clear PR @Sidd-T!!

We will take a look in our meeting tomorrow, if not before. Feel free to join the meeting to if you want to know the project better (see Discord for the link).