Feature: Add "favourite contests" section

[jaivsh]

Describe the feature

The user would be able to mark the upcoming contest as "favourite" which would be displayed in the favourites section. This way, the users would be able to select the contests which they want to participate in and would be able to manage the same in a separate screen.

Deliverables: Favourites Screen, option in each contest list tile to mark as favourite/not favourite.

Add ScreenShots

Sample screenshot for understanding the favourite section mechanism:

Record

• [X] I agree to follow this project's Code of Conduct
• [X] I'm a GSSOC'23 contributor
• [X] I want to work on this issue

[jaivsh]

Hi @avinashkranjan can you please review this feature request?

[avinashkranjan]

Go Ahead @jaivsh

[jaivsh]

HI @avinashkranjan can u please review this PR?