fix: added keyboard navigation to searchbar

[Pritam12F]

PR Fixes:

• #570 Added keyboard navigation to search bar. User can now open the search bar with Ctrl/Cmd + K and close it with escape

Resolves #570

Before/After:

https://github.com/code100x/cms/assets/105589734/8742c7b1-5fd2-4adb-9256-fc5260b642ac

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