add functionality to play next video automatically

[Femish-Bhalodiya]

PR Fixes:

• 1 functionality to play next video automatically

Resolves #1308

Checklist before requesting a review

• [x] I have performed a self-review of my code
• [x] I assure there is no similar/duplicate pull request regarding same issue

[devsargam]

Adding it to things to review

[Prashant-flick]

@Femish-Bhalodiya I think this will only work in the week in which the video is playing , it will not play the next week video, when you are at the last video of a week, can you fix that

[Femish-Bhalodiya]

@Prashant-flick It is intended. I thought it would be better if a guy know he is done with the current week.

[devsargam]

closing in favour of https://github.com/code100x/cms/pull/1434