Publish state changes to Zabbix

[rusitschka]

Proposed change

The Zabbix component is currently used to retrieve alert data from Zabbix into Home Assistant. This PR adds the possibility to submit state changes from Home Assistant into Zabbix - similar to, e.g. Recorder (to DB), or Influx components.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example entry for configuration.yaml:

# Example configuration.yaml
zabbix:
  host: zabbix.example.com
  path: ""
  ssl: true
  username: !secret zabbix_username
  password: !secret zabbix_password
  publish_states_host: homeassistant
  exclude:
    domains:
      - device_tracker
    entities:
      - sun.sun
      - sensor.fritz_netmonitor
      - sensor.time

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Add documentation for publish state changes to Zabbix home-assistant.io#15130

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

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

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• Untested files have been added to .coveragerc.

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
• 🥈 Silver
• 🥇 Gold
• 🏆 Platinum

[rusitschka]

@MartinHjelmare thanks for your feedback. I implemented your suggested changes.

[MartinHjelmare]

Three comments left to resolve.

[rusitschka]

I just changed two things - what's the third one? Found it :-)

[MartinHjelmare]

Nice!

[MartinHjelmare]

Please add a link to a docs PR in the PR description. Then we can merge.

[rusitschka]

Please add a link to a docs PR in the PR description. Then we can merge.

Done

[MartinHjelmare]

Thanks!