Pybu camera

[bheijden]

• Pybullet: added camera rendering. Closes #96 for now, but requires more work. Opened new issues #107, where dedicated sensor/actuator classes should be implemented in the pybullet physics bridge.
• Solved issues with reset (now also update obs & state).
• Added rendering in RosEnv. Closes #99
• Added px150 config. Opened new issue #112.
• Fixed buggy behavior pybullet by simply tuning the gains in the ur5e .yaml. Closes #93.
• Get ur5e URDF via xacro. Closes #86 for now, but requires more work. Opened new issue #111 for better xacro support.

[AlexanderKeijzer]

Lijkt trouwens alsof er ergens met een merge veel stuk is gegaan want ik zie dat je weer closeenv enzo weg moest halen. Misschien is CI niet zo'n gek idee haha