API Page - Mandatory Fields

[jwikman]

According to https://alguidelines.dev/docs/bestpractices/api-page/#mandatory-fields there are a couple of fields that should be mandatory on API pages, and they should have specific names.

I suggest a new rule, for API pages only, where these fields should always be part of the API Page:

• SystemId
  • This field should be exposed with the name id
• SystemModifiedAt
  • This field should be exposed with the name lastModifiedDateTime. If you choose a different name, then the webhook functionality will not work properly.

(I also think that #45 would be nice together with this new rule.)