Page API: ODataKeyFields

[waldo1001]

May be a warning for when people forget the ODataKeyFields-property on a page-based API?

[jwikman]

And I think that the rule should include that this property should always be set to SystemId, as specified at https://alguidelines.dev/docs/bestpractices/api-page/#odatakeyfields.

[Arthurvdv]

The v0.30.28 release of the LinterCop has now multiple rules based on the Best Practices for API pages from the alguidelines.dev.

• LC0061 - Pages of type API must have the ODataKeyFields property set to the SystemId field.
• LC0062 - Mandatory field is missing on API page.
• LC0063 - Consider naming field with a more descriptive name.