Added responsiveness to the Side Navigation Bar

[AdityaAshvin]

Description

Added responsiveness to the side navigation bar. A trigger button appears in mobile view and small screen view which when clicked opens the navigation bar.

Fixes #58

Type of change

Please delete options that are not relevant.

• [x] New feature (non-breaking change which adds functionality)

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added all the three reviewers: @vinitshahdeo, @kashish121 & @ishika1727

[AdityaAshvin]

@ishika1727 The required changes are made. Please review it.

[AdityaAshvin]

[Kashish121]

There's a small issue, the trigger button is partially visible in maximize tab mode.

See the encircled region.

[AdityaAshvin]

@AdityaAshvin please make the required adjustment.

@Kashish121 The required adjustments are made.

[Kashish121]

@AdityaAshvin That's coming along nicely. 👏

@vinitshahdeo it's good to go.