Changes for gzsim HITL support

[haitomatic]

• only transfer needed sensor and groundtruth msg
• suport only TCP and UDP (drop serial)
• cleanup unused features
• build.sh only builds and adds .so object to docker image artifacts repo which is then used in gz server https://github.com/tiiuae/gz-sim-server container as one of the gzsim plugins

[haitomatic]

px4-gzsim-plugins docker image now contains the .so asset that can be extracted by cloud simulation (SITL) and HITL setup.
The gazebo-sim-server container can access models,worlds and plugins in the same way via volume binding.

services:
  gazebo-server:
    network_mode: host
    image: ghcr.io/tiiuae/gz-sim-server:latest
    command: ["world.sdf"]
    volumes:
      - /tmp/.docker.xauth:/tmp/.docker.xauth
      - /tmp/.X11-unix:/tmp/.X11-unix
      - ../gz-models:/data/models
      - ../gz-worlds:/data/worlds
      - ../gz-plugins:/data/plugins
    environment:
      DISPLAY: ${DISPLAY}
    privileged: true

[jnippula]

Looks good to me