Integrate new CogniCrypt Use Case- Attribute-Based Encryption

[kruegers]

This project is being developed by Prof. Blömer's group at Uni Paderborn. For more information, ask me for a project description. The implementation, packed as a jar file, can be found here: https://www.dropbox.com/s/moz5q27e86usmtx/craco4openCCE1.zip?dl=0

This integration includes:

1. Get familiar with the implementation
2. Create appropriate CrySL rules
3. Develop questions for configurator wizard and consequences of responses
4. Devise the code template.

If there are functionalities needed for the integration of this task, open another issue and implement them.