Add image-transport-plugins to dependencies

Fixed bug

Required information:

• Operating system and version:
  • Ubuntu 18.04 (and others)
• Autoware installation type:
  • Docker
• Autoware version or commit hash
  • 1.12.0 and later
• ROS distribution and version:
  • N/A (using Autoware docker image)
• ROS installation type:
  • Docker
• Package or library, if applicable:
  • image_transport (plugins)

Description of the bug

This launch file uses image-transport-plugins for compressed images. The package is not included in the docker images.

Steps to reproduce the bug

1. run docker container
2. try to launch roslaunch lgsvl_simulator_bridge bridge.launch

Expected behavior

Compressed images from simulator get republished for autoware

Actual behavior

Get exception because image-transport-plugins which contains 'compressed' is not found. 'image_transport::TransportLoadException' what(): Unable to load plugin for transport 'compressed'

Fix applied

Add image-transport-plugins as to dependencies.