Added full screen graph view

[ay-bh]

This PR adds the feature for a full-screen graph view, closes #85.

Changes Made:

• Added full-screen graph view functionality to the ChartWrapper component.
• Introduced a new .svg asset for the full-screen toggle button and integrated it into the UI.
• Added a Modal component (MUI) with custom style to render the chart in full screen.

Testing Performed:

Manual testing was conducted to ensure the new functionalities work as expected. This includes:

• Toggling the full-screen view on and off.
• Testing responsiveness and UI consistency across different screen sizes.

Feedback on the UI/UX and any potential edge cases not considered in the current implementation is highly appreciated.