This relates to #70, where refreshing the webpage causes the user to
need to login again, due to homeassistant not storing the user's session
token `hassTokens`.
Added many new configuration options, including claim configuration and client_secret/confidential client support. Also enables user linking & creates person entries upon first sign in.
* Bumped version to 0.2.0
* Implemented Github Actions for HACS, Hassfest, Linting
* Improved code quality (compliant with the linter now)
* Added link to the finish page to automatically login on the same device/browser
