[draft] [breaking] Added `support` field in `library.properties`

[cmaglie]

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• [X] The PR has no duplicates (please search among the Pull Requests before creating one)
• [X] The PR follows our contributing guidelines
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)
• [ ] UPGRADING.md has been updated with a migration guide (for breaking changes)
• [ ] configuration.schema.json updated if new parameters are added.

What kind of change does this PR introduce?

This is a POC to test the proposal in https://github.com/arduino/arduino-cli/issues/2149

What is the current behavior?

What is the new behavior?

Does this PR introduce a breaking change, and is titled accordingly?

Yes, but not yet updated the docs.

Other information

[aliphys]

Would this PR allow discrimination between the Portenta H7 and Portenta Machine Control, which both have the same core but different physical IO? cc @alrvid