Merge after GPN

This is a Merge Request for all the changes made during GPN22. Summary of the changes:

• Rename r2kad -> kira (#13)
• Add test scripts for minimal connectivity + necessary infrastructure (#11)
• Add minimal examples (#15)
• debug-tools from (!11 (merged))
• some work on DHT
• possibility to build debian packages for x86_64 and aarch64
• possibility generate gml files and start containernet setups from it