The assimp_interface was implemented and added to the list of exported targets. This has been done to provide a cleaner and more encapsulated way of managing the assimp dependencies inside the VirtualRobot project. Now, instead of directly linking the assimp libraries to the VirtualRobot target, an interface library (assimp_interface) has been created to manage the assimp dependencies. This library is then linked to the VirtualRobot target. Additionally, install targets have been updated to include the assimp_interface.

Refactoring of MMM framework to SimoxUtility: Added string helpers and conversion tools, a distinguishable color lookup table e.g. for creating graphs, a rapidxml wrapper for easier parsing of xml files and moved deprecated RobotPoseDiffIK from MMMTools to VirtualRobot

* remove some pointer derefs
* manually inline some code
* compile pqp into VirtualRobot (library inlining)
* auto format some code
* remove unused datamembers (they were calculated, but we never used them)