DimSim: configurable sensor publish rates

[Viswa4599]

Problem

Image publish rate is hardcoded at 2 Hz (500ms) in dimosBridge.ts. Lidar at 5 Hz (200ms browser-side) and 10 Hz (100ms server-side). Not configurable at runtime or via embodiment config.

Reported by Paul — running dimos --simulation run sim-agentic, /color_image publishes at ~2 Hz even with DIMSIM_RENDER=gpu.

Proposed Solution

• Add sensorRates to embodiment/sensor config (images, lidar, odom intervals in ms)
• Pass from Python DimSimConfig → bridge server → browser DimosBridge
• Allow runtime update via SceneClient

Current Hardcoded Values

Sensor	Location	Rate
color_image	dimosBridge.ts:30	500ms (2 Hz)
depth_image	dimosBridge.ts:30	500ms (2 Hz)
lidar (browser)	dimosBridge.ts:30	200ms (5 Hz)
lidar (server)	lidar.ts:21	100ms (10 Hz)
odom	dimosBridge.ts:30	20ms (50 Hz)

Context: dimos team feedback on PR #1390.

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Synced from DIM-775 by summer