Add skip link for better keyboard accessibility Fix-#3084

[Chaitanya1672]

Fixes #3084

Hi @raclim please merge this fix.

Changes:
Added skip link functionality to the project. I have included a skip link for the "Play Sketch" button for the time being. But we are able to add additional skip-links as needed. I've written the code accordingly, a demo is shown below. Please let me know if you require any more steps for this patch, or if any UI modifications or skip links need to be introduced.

Steps to check fix:-
-> Go to IDE view
-> Click Tab on keyboard
-> Click Enter

I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

Preview Video:-

Skip.Link.Fix.Preview.mp4

[raclim]

Thanks so much for your work on this, this is fantastic! I think there could be improvements to it down the line, but I feel that we could merge this in for now as a starting point and receive feedback from users and make adjustments to it as they come!