[rviz_common] port basic plugins from "temp" location

[wjwwood]

For the demo I minimally ported the movement tool, one view controller (orbit), and a handful of display types to this "temp" folder in rviz_common:

https://github.com/ros2/rviz/tree/ca8f42e43ba9eaa6e15434b47906d7580da1c14a/rviz_common/src/rviz_common/temp/default_plugins

These were copied from rviz/src/rviz/default_plugin. So they should be deleted and the actual port should be made where we move the files in rviz/src/rviz/default_plugin to somewhere in the new rviz_default_plugins package and properly ported/updated. These files in the "temp" folder may serve as an example of how to solve some problems.

Once ported these plugins need to be in a shared library and need to be loaded via pluginlib, so this depends on #49.

The end goal of this would be to have a MVP application which improves on the current state by:

• loading from pluginlib mechanism and
• properly porting plugins to rviz_default_plugins

[wjwwood]

Several have been ported, but the tf and robot_model plugins still need to be moved out of "temp" in the rviz_common package and into the rviz_default_plugins package. The point cloud display also needs to be ported to rviz_default_plugins but it's not in the "temp" folder.

[wjwwood]

The porting thus far has been in #123.

[wjwwood]

I'm going to close this in favor of #101 which is more specific (and to simply waffle.io's behavior when linking the pr to the issue).