Preliminary image support

[acoliver]

Add experimental terminal image rendering support with pixel sizing and React exposure.

Highlights:

• New Image renderable that accepts pixelWidth/pixelHeight and fit modes (contain/cover/fill) with sharp-based scaling.
• Renderer loads/caches images, emits kitty/iTerm2 graphics escapes, deletes kitty ids on move/resize, and surfaces pixelResolution via capabilities and a pixelResolution event.
• React type exports and components include Image; tests cover graphics protocol parsing and renderer image path.

Notes:

• Native build/tests not run here; JS tests only.
• Pixel resolution query/response handled in JS; header sizing in downstream apps should use the exposed resolution and avoid hardcoded px-per-cell fallbacks.

Addresses #387

[acoliver]

converting to draft while I figure out this bun crash issue.

[remorses]

I think there is a better way to detect kitty graphics support, there should be already something in the codebase