climate: Add features to generic Toshiba model

[zagor]

What does this implement/fix?

Add fan speed, dry and fan-only operation modes to the "generic" Toshiba climate component.
This reduce differences between generic and PT1411 models.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other:

Related issue or feature (if applicable): fixes

Pull request in esphome-docs with documentation (if applicable): esphome/esphome-docs#

Test Environment

• ESP32
• ESP32 IDF
• ESP8266

Example entry for config.yaml:

No configuration change.

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in esphome-docs.

[probot-esphome]

Hey there @kbx81, mind taking a look at this pull request as it has been labeled with an integration (toshiba) you are listed as a code owner for? Thanks!
_{^{(message by CodeOwnersMention)}}

[kbx81]

Does this overlap with #3609?

[zagor]

Does this overlap with #3609?

Close, but no. #3609 adds the new quiet fan mode to the climate component only, while my PR only touches the toshiba component. My PR also doesn't implement the quiet fan mode since I chose to not include any custom modes in this first PR.

Once #3609 is merged, adding quiet as a standard fan mode, I can make a new PR implementing it in the toshiba component. (Unless @MichaelMure beats me to it)

I have also considered adding two more custom fan modes to the toshiba component (since it supports five different fan speeds instead of the standard three), but I'm taking things one at a time.

[MichaelMure]

I don't think I'll find time in the upcoming weeks to work on esphome, so if you want to take care of things (including my PRs), please do.

[Dieghito72]

This PR and also #3609 is great, is there any plan to merge?

[zagor]

@kbx81 I just rebased this, is there anything else I can help with to get this merged?

[kbx81]

I don't have a "generic" Toshiba unit with which to test these specific changes, but the code looks fine to me. 😄