* fix: blur in io, remove panzoom and use fabricjs for panzoom
- remove panzoom
- implement panzoom using fabricjs
- set background image for canvas
- add bounding rect for canvas
- draw or add point inside in bounding rect
- update zoom tool
* support pinch to zoom on mobile client
* fix lagging of canvas, zoom in draw mode
* panning in touch events
* Add simple mask editor add-on API
* Signal completed mask editor image loading to Python
* Add API methods for querying mask editor state, fix formatting
* Use event forwarding to propagate image loaded event
Should fix mobile support by moving all bridgeCommand calls to `NoteEditor.svelte`
* Add shape classes to mask editor API
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Co-authored-by: Glutanimate <glutanimate@users.noreply.github.com>
