Add integration for APsystems EZ1 microinverter

[mawoka-myblock]

Proposed change

The APsystems EZ1 microinverter has an open local HTTP api and I've created the integration over at https://github.com/SonnenladenGmbH/APsystems-EZ1-API-HomeAssistant but the people wanted to be integrated into HomeAssistant directly.

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)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Add integration docs for APsystems API home-assistant.io#32096

Some notes:
I couldn't run pre-commit on all files as that crashed my PC, since 16GB of ram weren't enough. This is also my first PR, so I tried my best. I also couldn't format with black, as it modified 200 other files as well.

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
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format 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.
• For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• Untested files have been added to .coveragerc.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[home-assistant]

When adding new integrations, limit included platforms to a single platform. Please reduce this PR to a single platform

[mawoka-myblock]

I don't get it why the bot says that I am changing 2 platforms. Shall I put the tests into a different PR?

[mawoka-myblock]

Do you know whats wrong @patman15? You, @tcurdt, also mentioned your interest in this.

[tcurdt]

I don't understand the bot comment in this case either.

[patman15]

Do you know whats wrong @patman15? You, @tcurdt, also mentioned your interest in this.

@mawoka-myblock my best guess is that due to the HA documentation saying Limit to a single platform you are not allowed to change the platforms switch, number, and sensor in a single PR.
Also note that there are the style guidelines that should be followed I guess. That were the changes I was talking about when saying I did more than just introducing the coordinator. 😉 Hope this helps, but I'm not an expert either, just interpreting what I read doing my code!

[mawoka-myblock]

Regarding the platforms, you're right. Will remove the switch and number soon. I think I addressed most styles guidelines in the files here. They differ quite a bit from them in the Hass-repo.

PR was reduced to single platform

[mawoka-myblock]

Okay, sorry for the inconvenience, but I've created a new PR: #114531