Moved trajectory visualization from ROSInterface to new file.

Enhanced trajectory visualization features such as:

* It can draw the trajectory of any vehicle , object or vehicle part (Anything that has a name)
* Added color tag to change trajectory color.
* Added Switch node to hide trajectory lines pressing "t" key.
* Deleted number of trajectory points in terminal output.
* Done through update callback, no longer depend on receiving messages to draw.

I added the class in a new file, but maybe we should move it to UWSimUtils...