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_talent.py

@@ -1,12 +1,12 @@
 # test_with_pytest.py
 import pytest, logging, asyncio
 from math import isclose
-from app.src.async_stream import AsyncIfcImpl, StreamPtr
-from app.src.gen3.talent import Talent, Control
-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
+from async_stream import AsyncIfcImpl, StreamPtr
+from gen3.talent import Talent, Control
+from config import Config
+from infos import Infos, Register
+from modbus import Modbus
+from messages import State
 
  
 pytest_plugins = ('pytest_asyncio',)