S allius/pytest (#211)

* - 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

app/tests/test_solarman.py

@@ -5,12 +5,12 @@ import asyncio
 import logging
 import random
 from math import isclose
-from app.src.async_stream import AsyncIfcImpl, StreamPtr
-from app.src.gen3plus.solarman_v5 import SolarmanV5, SolarmanBase
-from app.src.config import Config
-from app.src.infos import Infos, Register
-from app.src.modbus import Modbus
-from app.src.messages import State, Message
+from async_stream import AsyncIfcImpl, StreamPtr
+from gen3plus.solarman_v5 import SolarmanV5, SolarmanBase
+from config import Config
+from infos import Infos, Register
+from modbus import Modbus
+from messages import State, Message
 
 
 pytest_plugins = ('pytest_asyncio',)