Anova-wifi

Fix
* Mypy error ([`c99cab0`](https://github.com/Lash-L/anova_wifi/commit/c99cab03975eb0e38ae92babf8681475a06c6809))
* Only update if 15 seconds have passed ([`303e791`](https://github.com/Lash-L/anova_wifi/commit/303e791f9dd888b8b5b36788cbb77b20d7a8097d))

Feature
* Add debug to ws ([`dcdeb97`](https://github.com/Lash-L/anova_wifi/commit/dcdeb97d3034b3cff18268b15227380717e54f0d))

Feature
* Changed to dataclass for updates ([`4394c5d`](https://github.com/Lash-L/anova_wifi/commit/4394c5df40796053c8e0f60b6c408e42aa039ba7))

Fix
* Linting ([`8657c1d`](https://github.com/Lash-L/anova_wifi/commit/8657c1d4b7e338f5f82ec5acef62bb52f07f779f))

Feature
* Ignore already existing devices ([`c7c7861`](https://github.com/Lash-L/anova_wifi/commit/c7c7861d8d05f85274451c84b0c386e5885b6446))

Feature
* Add typeddict for anova updated ([`7f2da00`](https://github.com/Lash-L/anova_wifi/commit/7f2da00d84750bc9168b13184936a609db15cdd6))

Fix
* Set water temp as None if it does not exist ([`2750a9d`](https://github.com/Lash-L/anova_wifi/commit/2750a9d83b8af30365a92e1af01040b532ae1ecf))