Add network resource button entities to ISY994 and bump PyISY to 3.0.12

[shbatm]

Breaking change

The isy994.run_network_resource has been deprecated and will be removed in a future release. Network Resources have been added as button entities and those should be used instead.

Proposed change

Add full support for the ISY/IoX's Network Resources by creating button entities to trigger each resource. Previously these were only possible to control from Home Assistant using the integration-specific service isy994.run_network_resource. These are being added as buttons because they are one-shot executions with no return values (they operate similar to the rest_command integration).

Resources will be added to a single "ISY Networking Module" device entry as this is a separate and optional module in the ISY.

Also included in this PR:

1. Move isy.configuration dict keys to string literals where used.
2. Performance increases for newer UDI hardware by increasing the simulatneous connections available when the module initializes and determines it is not on legacy hardware (happens within PyISY module)
3. Bump PyISY to 3.0.12 to add expected keys to the NetworkCommand class and add (2) above. Full change log: https://github.com/automicus/PyISY/releases/tag/v3.0.12

Note when testing: there appears to be a bug in the most recent version of IoX firmware where network resources will report an error when called, but will be called successfully. This shows up as a warning in the log only, and no changes will be required here once UDI fixes the issue on their end.

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 network resource button entities to ISY994 home-assistant.io#25640

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.

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

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[home-assistant]

Hey there @bdraco, mind taking a look at this pull request as it has been labeled with an integration (isy994) you are listed as a code owner for? Thanks!

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[bdraco]

Looks good. Minor comments above.

Testing now

[bdraco]

I created a few but they aren't showing up. Trying to do some debugging now

[bdraco]

Nevermind it works great. Its under Networking Module

[bdraco]

Thanks @shbatm