* move forward_at_cmd_resp into InfosG3P class
- the variable is shared between the two connections
of an inverter. One is for the TSUN cloud and the
other for the device.
* use inverter class to share values between
the two protocol instances of a proxy
- move forward_at_cmd_resp into class InverterG3P
- store inverter ptr in Solarman_V5 instances
- add inverter ptr to all constructurs of protocols
- adapt doku and unit tests-
- add integration tests for AT+ commands which
check the forwarding from and to the TSUN cloud
* adapt and improve the unit tests
- fix node_id declaration, which always has a / at
the end. See config grammar for this rule
- set global var test to default after test run
* - fix pytest setup that can be startet from the rootdir
- support python venv environment
- add pytest.ini
- move common settings from .vscode/settings.json into pytest.ini
- add missing requirements
- fix import paths for pytests
* - support python venv environment
* initial version
* - add missing requirements python-dotenv
* fix import paths for pytests
* fix pytest warnings
* initial version
* report 5 slowest test durations
* add more vscode settings for python
* Add SolarmanEmu class
* Forward a device ind to establish the EMU connection
* Move SolarmanEmu class into a dedicated file
* Add cloud connection counter
* Send inverter data in emulator mode
* Improve emulator mode
- parse more values from MQTT register
- differ between inverter and logger serial no
* Add some unit tests for SolarmanEmu class
* Send seconds since last sync in data packets
* Increase test coverage
