Synchronized multi-channel hooks

@cw.on_synchronized(twin_uuid, ["frames/front", "depth/default", "joint_states"], tolerance_ms=50)
def detect_collision(samples, ctx):
    frame = samples["frames/front"].payload
    depth = samples["depth/default"].payload
    joints = samples["joint_states"].payload
    # All three are within 50ms of each other

def handler(samples: dict[str, Sample], ctx: HookContext) -> None: ...

@cw.on_synchronized(
    twin_channels={
        "left": (CAMERA_LEFT, "frames/default"),
        "right": (CAMERA_RIGHT, "frames/default"),
    },
    tolerance_ms=50.0,
)
def on_stereo_pair(samples, ctx):
    left = samples["left"]   # Sample from CAMERA_LEFT twin
    right = samples["right"] # Sample from CAMERA_RIGHT twin
    # ctx.metadata["twin_uuids"] lists the involved twins