feat: raster layer async geotiff integration

[kylebarron]

Screen.Recording.2026-03-25.at.2.43.03.PM.mov

Change list

• Manage creation of fetch_tile closure inside of from_geotiff
• Propagate request cancellation from AbortSignal through to Python, so it can cancel asyncio tasks if needed
• New TileMatrixSetTrait for validating and serializing TMS definitions
• New ProjectionTrait for validating and serializing projections
• Rename cog optional feature to raster
• Bump deck.gl-raster dependency to 0.4.0
• Always use deck.gl dependency from local node_modules (useful if linking to local directory of deck.gl-raster)

TODO:

• prepare examples for release
• Update example to show a process for debugging the tile visualization
• Add raster.reshape_as_image helper
• Pass over API docs
• Write release post