- formatting, cleanup
- moved update skill into FluxioSkill
- implemented core mutex functionality
- improved return value and error handling
- added armarx warning messages
- store root profile defaults as stringified json in fluxio values

Co-authored-by: Benedikt Engel <uyqhv@students.kit.edu>
Co-authored-by: Julian Tusch <urhrf@student.kit.edu>
Co-authored-by: Peter Albrecht <usnlf@student.kit.edu>

(co-authored: ughlu@student.kit.edu)

finished implementation of updated skill api. Works with example skill provider. Needs testing of specialized skills and refactoring of remaining skills.

update to skills. Allows skills to run concurrently. Refactoring of full skills framework. Allows skill to get "prepared", i.e. wait for input

Refactored skill framework and added new enum classes so that a skill can not return idle or running as terminating value