Added AppController M24

AppController/.gitignore

AppController/LICENSE.txt

AppController/README.md

AppController/pom.xml

...java/eu/DECIDEh2020/appManager/AppDescriptionFactory.java

.../java/eu/DECIDEh2020/appManager/AppDescriptionHelper.java

...r/src/main/java/eu/DECIDEh2020/appManager/AppManager.java

...c/main/java/eu/DECIDEh2020/appManager/HistoryFactory.java

...c/main/java/eu/DECIDEh2020/appManager/HistoryManager.java

...ECIDEh2020/appManager/exceptions/AppManagerException.java

...2020/appManager/exceptions/DECIDEValidationException.java

...java/eu/DECIDEh2020/appManager/models/AppDescription.java

...ava/eu/DECIDEh2020/appManager/models/AvailabilityNfr.java

...main/java/eu/DECIDEh2020/appManager/models/Container.java

...c/main/java/eu/DECIDEh2020/appManager/models/CostNfr.java

.../eu/DECIDEh2020/appManager/models/DetachableResource.java

.../main/java/eu/DECIDEh2020/appManager/models/Endpoint.java

...ain/java/eu/DECIDEh2020/appManager/models/Expression.java

...u/DECIDEh2020/appManager/models/HistoricalDeployment.java

...n/java/eu/DECIDEh2020/appManager/models/HistoryEntry.java