Add support for static typing for the PECO library

[IceBotYT]

Proposed change

Adding support for static typing for the PECO library

Here's a diff between 0.0.21 and 0.0.25 IceBotYT/peco-outage-api@16f1ced..493e5c8

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

Additional information

• This PR is related to issue: Improve code quality of PECO integration #68692 and Add PECO power outage counter integration #65194

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.
• 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.

The integration reached or maintains the following Integration Quality Scale:

• No score or internal
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• 🥇 Gold
• 🏆 Platinum

To help with the load of incoming pull requests:

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

[farmio]

LGTM 👍

[gjohansson-ST]

The PR description should include a changelog or diff between the versions in the upstream package

[frenck]

Please make sure the tests pass @IceBotYT

[IceBotYT]

Please make sure the tests pass @IceBotYT

They're not related to my integration

[frenck]

They are...

Anyways, we cannot merge with failing tests; so it needs to be solved.

[IceBotYT]

Oh oops. I will fix it when I get home.

Thanks!

[frenck]

Nice, thanks @IceBotYT 👍