added group readme

README.md

+# Welcome to the RoboQuality Project Group!
+
+This is the main group of the RoboQuality project.  
+All packages are seperated in single repositories.  
+The main repository is [Workflow](https://mygit.th-deg.de/roboct/robo_quality/rq_workflow).  
+
+## Packages Overview
+
+| Submodule          | Describtion                                   |  Link                                                                      |
+|--------------------|-----------------------------------------------|----------------------------------------------------------------------------|
+| `Controller`       |  Workflow controller. Holds all information.  | [rq_controller](https://mygit.th-deg.de/roboct/robo_quality/rq_controller) |
+| `Defect Detection` |  Defect detection module                      | [rq_ddetection](https://mygit.th-deg.de/roboct/robo_quality/rq_ddetection) |
+| `Hardware`         |  Interface to real / simulated system         | [rq_hardware](https://mygit.th-deg.de/roboct/robo_quality/rq_hardware)     |
+| `Trajectory`       |  CT-Trajectory optimization                   | [rq_trajectory](https://mygit.th-deg.de/roboct/robo_quality/rq_trajectory) |
+| `Interfaces`       |  project intern interfaces for all msg / srv. | [rq_interfaces](https://mygit.th-deg.de/roboct/robo_quality/rq_interfaces) |