Make HomeAssistant description field optional

[ehowe]

Some HomeAssistant Todo entities do not support the description field. This includes the default Shopping List entity HA creates and one I use through a custom HA plugin: https://github.com/watkins-matt/home-assistant-google-keep-sync.

This PR adds a configuration to the connector configuration to make this field optional. By default, it is true to maintain backward compatibility with existing connectors, but the user can disable it if their Todo entity does not support it.

[CLAassistant]

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[vabene1111]

thanks for the PR. I will review the code and get it merged for the next update. @mikhail5555 if you want you can take a look too :)

[mikhail5555]

thanks for the PR. I will review the code and get it merged for the next update. @mikhail5555 if you want you can take a look too :)

Gave it a quick review, looks very un-impactful. Havent touched the form/model/deserialization part in quite a bit so not 100% sure if nothing is missing (or the "initial" field in the form is required for instance).

Would indeed make it also compatible with the 'default' Shopping list entry which trows an error if you send a description field (I believe this was changed in one of the recent version, because prior it just ignored this field)

[vabene1111]

ok thanks @ehowe for the PR and @mikhail5555 for your feedback, to me everything looks correct as well, so getting this merged for the next update.