Add tuya/climate halves precision if the sensor supports it

[3v1n0]

Devices may use a temperature divider of 2, in such case tuyah won't
properly handle its halves values using whole precision.

Fix this by checking if the device supports halves, and in such case to
return such precision

This needs PaulAnnekov/tuyaha#54

Breaking change

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[homeassistant]

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[probot-home-assistant]

Hey there @ollo69, mind taking a look at this pull request as its been labeled with an integration (tuya) you are listed as a codeowner for? Thanks!
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[frenck]

Converted PR to draft and added a label to indicate we are awaiting upstream for this.

[github-actions]

There hasn't been any activity on this pull request recently. This pull request has been automatically marked as stale because of that and will be closed if no further activity occurs within 7 days.
Thank you for your contributions.

[frenck]

This PR has been in a draft and running stale without activity since November.
I'll go ahead and close this PR for now. Feel free to re-open the PR again when upstream becomes available. Contributions are always appreciated 👍