Add release 21.01.01

[DEV] Add test: "LayerCommands" must be called before "InterfacesComm…

Add release 21.00.00

• Explain how to cross-compile for android (using the NDK)
• Explain how to cross-compile for linux using a custom toolchain
• Add "example.txt" to explain how could be documented the .json config

Add release 20.12.01

[DOC] Update documentation

Add release 20.12.00

[DEV] Use googletest installed on the system when available

Also set project version to 20.12.00

Add release 20.05.00

20 for 2020
05 for May
00 because it's the first generated release in May

The service is fully working.
To use it, you just have to provide a json file containing network-related commands you want to execute.

Please, feel free to create issues when necessary and give feedback on the source code, and used tools.