[Feature] Add a Bunk/Skip all courses button

[hrideshmg]

Self explanatory.

If a particular class is already marked as bunked/skipped then the request for that class should not be sent.

[Varundeep111]

Hi @ hrideshmg, i would like to work on this issue,
Kindly conform no else is working on this

[angrezichatterbox]

Hi @ hrideshmg, i would like to work on this issue, Kindly conform no else is working on this

Feel free to work on this after #41

[Varundeep111]

want a more detailed description about this issue !

not able to understand what means by "request not be sent for that class if marked as bunk / skipped"