Add a Grid View option for the notes list

[alihamuh]

Describe the solution you'd like
Add a toggle option to switch the main notes list from the current List View to a Grid View (card-based layout), similar to other modern note-taking applications.

Describe alternatives you've considered
None. The current List View is functional but can make quick visual scanning and organization less efficient when handling hundreds of notes.

Additional context
A Grid View layout would significantly improve the overall UI/UX, making it faster for users to browse, locate, and visually categorize notes at a glance.