feat(ui): implement fully responsive mobile and desktop layout redesign

[arrase]

Summary of Changes

• Mobile Navigation Drawer: Added hamburger menu toggle and responsive dropdown for navigation tabs in top nav bar.
• Floating Action Buttons: Added mobile floating action triggers for Orbital Controls, Physics Panel, and Molecule View.
• Bottom Sheet Panel Drawers: Converted control and physics panels to smooth sliding bottom sheets on mobile devices.
• Responsive Periodic Table: Stacked layout on smaller screens with smooth horizontal touch grid scroll and auto-scroll to element inspector.
• Version Bump: Updated version to 0.2.0 in package.json and src-tauri/tauri.conf.json.

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