AI function calling, state summary, and spatial references

[benptc]

Adds SpatialApplicationAPI and LanguageInterface to spatialDraw tool.

• Provides an addLine API that AI can use to draw a line.
• Performs the coordinate system conversions to say "draw a line from origin to cursor position" in world coordinates and it shows up at the intended location (in the tool's local coordinates).
• Attempts to use gen-AI to parse the drawings coordinate list and describe its contents as visual shapes.

Part of the ptcrealitylab/vuforia-spatial-toolbox-userinterface#725 set of PRs.