Load EntityDefinitions and RelationshipDefinitions

[RafaelCavazza]

Add a option to load the EntityDefinitions with Attributes and the RelationshipDefinitions.
With those loaded we can auto correct attributes names and entity relationships.

Ex. ->
entity["new_account"] is corrected to -> entity["new_Account"]

Api Links:

/api/data/v8.2/EntityDefinitions?$filter=SchemaName eq 'ENTITY_NAME' & $expand=Attributes
/api/data/v8.2/EntityDefinitions?$expand=Attributes
/api/data/v8.2/RelationshipDefinitions(SchemaName='ENTITY_SCHEMANAME')
/api/data/v8.2/RelationshipDefinitions

Ex.:

When creating a Incident with the customer field:

entity["customerid"] = new EntityReference("contact", new Guid())

Must be changed by the Api To ->

entity["customerid_contact"] = new EntityReference("contact", new Guid())

The RelationshipDefinitions contains the 'ReferencingEntityNavigationPropertyName' with the correct value