Migrate application from React to SolidJS

[varunsripad123]

Hey! I’ve finished the migration from React to SolidJS. The main goal was to move over to Solid's fine-grained reactivity while keeping the exact same look and feel of the original app.

What’s changed:

State & Lifecycle: Switched out all the React hooks (useState, useEffect, useRef) for Solid signals and effects.
Reactivity Fixes: Refactored component props to follow Solid’s patterns—accessing them as props.value instead of destructuring them in the function signature to keep the reactive tracking alive.
JSX Audit: Cleaned up all the className attributes to class, fixed SVG attribute casing (like stroke-width), and replaced .map() loops with and for better performance.
Dependency Cleanup: Fixed a build issue with @commaai/qdl by manually compiling it with tsc, so the environment is stable for everyone now.
Tests: Updated the test suite to use @solidjs/testing-library. The main "renders without crashing" test is passing green.

[adeebshihadeh]

This does not remotely address the bounty goals.