Feature/view control

[Joschi3]

Added View Control Plugin for HectorViewController Interaction. Allows to control the rviz camera perspective with your gamepad.

Features:

• in driving mode camera control: Rotate the camera perspective using gamepad input.
• Dedicated view_control configuration:
  - Rotate, translate, and zoom the current view using the gamepad axes
  • Tracking control: Press 'B' to toggle tracking of a target frame (configurable via parameter).
  • 2D mode toggle: Press 'Y' to switch between 3D and 2D view modes.

Depends on https://github.com/tu-darmstadt-ros-pkg/hector_rviz_plugins/compare/feature/gamepad_view_controller?expand=1

[Excelsius314]

• Rebase requiered
• Weird behaviour when pressing "Y" button repeatedly in view control mode
• Possibly change view control mode on/off to be same buttion