Refactor ColorizeCanvas into a react component

[ShrimpCryptid]

Acceptance Criteria

• ColorizeCanvas should be invoked from App like a component (e.g., current setters are replaced with props that are updated as part of React's render cycle).

<ColorizeCanvas
   dataset={...}
   featureName={...}
   selectedTrack={...}
   ramp={...}
   rampMin={...}
   rampMax={...}
   ...
/>

• Internally, ColorizeCanvas can still break the React render paradigm and update its HTMLCanvas separately.

Details

• Unsure if this will break things like timeControls/recordingControls loops?