Is your feature request related to a problem? Please describe.
This is a feature request to add keyboard support for toggling fullscreen mode by pressing the 'F' key. This functionality is common in video players like YouTube and VLC and would enhance the user experience by enabling quick transitions into fullscreen mode.

Motivation
Currently, users must manually click the fullscreen button, which can become tedious—especially when frequently switching between applications like VS Code, Postman, and browser tabs during development or testing workflows.

Enabling a keyboard shortcut would:

1. Improve accessibility and efficiency.

2. Provide a smoother, more intuitive UX for power users.

3. Align the app with modern interface standards for media-rich or immersive content.

Describe the solution you'd like
Proposed Implementation:

1. Add a global event listener for the 'keydown' event.

2. On detecting the 'f' key (with checks to avoid interfering with input fields), toggle fullscreen mode using the Fullscreen API.

3. Ensure cross-browser compatibility and fallback handling.

Describe alternatives you've considered

1. Clicking the fullscreen button manually: This works but becomes repetitive and slows down workflow, especially during multitasking or development work.

2. Browser extensions or custom scripts: These can add the feature, but they require extra setup and aren't ideal for all users. It makes more sense to have this as a native feature of the website.