Add unit tests (#133)

* Add initial test & add pipeline

* Add very basic YAML config tests

* Add coverage reporting

* Add some webserver & template loading tests

* Add test cases for the helpers

* Implement initial OIDC server tests

* Test codestore & discovery checker

* Test basics of the config flow

* Add test for the HA auth provider

* Cleaned up tests & test injection

.gitignore

@@ -107,4 +107,6 @@ dmypy.json
 # End of https://www.gitignore.io/api/python
 /config/
 
-.venv
+.venv
+
+.pytest_logs.log