Add an option to unassign tags

[letsintegreat]

Right now, users can only assign themselves tags, as you can see in the above screenshot.

For the tags in Your Tags section, add a button (similar to what we have in All Tags section) to drop a tag. The onPressed function of this button would just be a copy paste of the existing one, with a few changes.

Ask to be assigned in the comments below before starting to work on this issue. Stick to the contribution guidelines as mentioned in the README file.

[mauryakshitij]

Pls assign this issue to me

[letsintegreat]

@mauryakshitij Thank you for showing interest, you can start working on it.