Updated robot-server

[der]

Replace rename and upgrade camera-server

• switch to UV
• camera feeds matching current interface
• motor control compatible with current but with smoother accelleration/decelleration (PID?)
• sensor/heading readings as current
• eye controls direction, wake/asleep, surprise
• neck readings and controls
• integrated movements
  • turn to direction/height (eventually turn to voice or face)
  • eyes move first then head with them tracking together
• shutdown command (optionally fully pi shut down if we can make that work)

[der]

Tried using uv that doesn't like working with system packages which is how libcamera2. Tried the uv option to do that but get runtime errors

Switched back to venv.

Renamed top level to robot-server.py and edited /etc/init.d/marvin.sh to match

[der]

Enough for now. Tweaked PID setting to make speed transitions, at least start up, fractionally smoother. Any more would probably need to be in the robot_server itself, setting a speed profile.