release-1.0: Develop (#11)

* Feature/process lifecycle (#4)

* Process delete functionality in progress

* Process delete feature

* artifact management added

* Small fixes, Notification component added

* MQTT host and port textbox disabled

* basic stateholder management features

* Code refractor

* Notifications in progress

* Notifications in progress, process group support

* Maintain compatibility with backend

* Feature/db content management (#5)

* artifact management added

* Small fixes, Notification component added

* MQTT host and port textbox disabled

* basic stateholder management features

* Code refractor

* Notifications in progress

* Notifications in progress, process group support

* Maintain compatibility with backend

* BPMN in progress, notification support

* Job creation and job examples added

* Notification receiving added

* BPMN class finished, related functionalities in progress

* Direct aggregator connection added, BPMN representation finished

* Update README.md

* Update README.md

* Bpmn overlay from backend

* Backend can update bpmn diagram at any time

* Bpmn overlay finished

* Code cleanup and comments added

* Job creation and job examples added

* Notification receiving added

* BPMN class finished, related functionalities in progress

* Direct aggregator connection added, BPMN representation finished

* Bpmn overlay from backend

* Backend can update bpmn diagram at any time

* Bpmn overlay finished

* Code cleanup and comments added

* Process Type Details view added

* more artifact details visible

* New examples added

* readme updated

* real-time aggregation visualization fixed

* typo fixed

* Create LICENSE.md