DICE Simulation tool 0.7.0

Changelog:

• Migrate to latest Eclipse version (2020-12) and increase required version numbers
• Maven build scripts cleanup and reorganization
• Dependencies reorganization and cleanup
• Build Acceleo sources with maven too
• Remove tests requiring GreatSPN from the deafult test suite
• Regenerate EMF code using the latest EMF templates
• Check and complete licensing and copyright comments in all source files
• Refactor Graphviz plug-in (and move it to DICE-Simulation-Utils)
• Fix #3
• Fix color issue in Invocations view when running the Simulation tool in desktops with a dark (or partly-dark) theme (e.g., Gnome default).
• Change default SSH auth provider from KEY to PASSWORD
• Add support for arrays in default values for variables in GaAnalysisContext
• Enable DICE Simulation items in quickstart page when not running in DICE IDE
• Change example project contents
• Add setup files to be used in Oomph
• Fix code parsing WNSIM output
• Other code and documentation enhancements and cleanups