Adam-sim

- The set view method now stores the default value of the azimuth, elevation and center so they are not passed every time

- Fixed a bug in the close method of the Simulation class

- Added more info to the Collision class separating the self collision and the environment collision
- Fixed a bug where not calling the render method loaded the MuJoCo screen
- Updated the Logger class
- Changed the check collisions function to return separately the self collisions and the env collisions as a numpy array

- Added a method to export the adam scene to a given directory
- Implemented a method to include the created map to the scene

- Added a whole new feature where bodies can be added to the scene by code.
- Added a method to use the MuJoCo engine to just check the collisions on the given configuration list

- Added a default key-value pair to the collision dictionary
- Added a method for the Simulation class where the collision dictionary can be extended
- Updated the API reference