fix: Sidebar fixed for v2

[ShwetKhatri2001]

Pull Request

What does this PR do?

Fixes #456

Sidebar is fixed to open only on hover for large screens and open onclick to menuicon for mobile screen.

Demo Video :
https://user-images.githubusercontent.com/56475750/151628221-aecb06c0-4f60-46ba-a266-494768dc4603.mp4

What part does this affect?

• FrontEnd.
• BackEnd.
• Documentation.
• Other. (Please specify below)

Before submitting

• Was this discussed/approved via a GitHub issue or slack?
• Did you read the contributor guideline?
• Did you ensure that there aren't any other open Pull Requests for the same update/change?
• Did you make sure the title is self-explanatory and the description concisely explains the PR?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure the code is clean and docstrings have been added or updated as required?
• Did you make sure the code is linted/formatted locally prior to submission? (using black and/or prettier)
• Did you make sure to update the documentation with your changes? (if necessary)

PR review

Anyone in the community is free to review the PR once the tests have passed.

Thank you for contributing to AutoDL. We look forward to your continued support.