Following camera freely setting offset

[adamkrawczyk]

What does this PR do?

Modifies behavior of ros2 following camera by modifying:

• Add free movement (Removed always look at target in consequence)
• Add rotation on mouse movement
• Add improved smoothing
• Add multi-key input handling
• Changes key rotation behavior (instead of rotating around target now rotates around it's axis [Q/E])
• Add camera freeze (camera not moving on shift press)

As a consequence during the game/simulation, the camera can be moved by the user similar to the Editor camera. Movement is on WSAD and rotation on mouse right button pressed + move. The camera is still following the target when it moves. The camera has anti-roll mechanism. The view can be changed on num keys 1-9 and pressing the current view num resets the position.

How was this PR tested?

Tested on two local projects and a new ros2 project from the template.

[patrykantosz]

I cannot edit the PR's description so I will write here - in current version shift key is not used anymore in this code.