Missing default type definitions in LanguageConstants.CreateResourceProperties()

[anthony-c-martin]

Some of the top-level resource properties have a well-known type definition on the ARM side. We should match these definitions on the Bicep side.

This will be useful in providing enhanced validation for #3000

For example, "identity" has a definition similar to the following on the ARM side:

interface Identity {
  userAssignedIdentities: { [msiId: string]: string },
  principalId: string,
  tenantId: string,
  type: 'SystemAssigned' | 'UserAssigned' | 'None',
}