entc/gen: add type for type edges (#318)

Will be used for adding methods on the struct edges

examples/o2o2types/ent/card.go

@@ -26,13 +26,16 @@ type Card struct {
 	Number string `json:"number,omitempty"`
 	// Edges holds the relations/edges for other nodes in the graph.
 	// The values are being populated by the CardQuery when eager-loading is set.
-	Edges struct {
-		// Owner holds the value of the owner edge.
-		Owner *User
-	} `json:"edges"`
+	Edges    CardEdges `json:"edges"`
 	owner_id *int
 }
 
+// CardEdges holds the relations/edges for other nodes in the graph.
+type CardEdges struct {
+	// Owner holds the value of the owner edge.
+	Owner *User
+}
+
 // scanValues returns the types for scanning values from sql.Rows.
 func (*Card) scanValues() []interface{} {
 	return []interface{}{

examples/o2o2types/ent/user.go

@@ -25,10 +25,13 @@ type User struct {
 	Name string `json:"name,omitempty"`
 	// Edges holds the relations/edges for other nodes in the graph.
 	// The values are being populated by the UserQuery when eager-loading is set.
-	Edges struct {
-		// Card holds the value of the card edge.
-		Card *Card
-	} `json:"edges"`
+	Edges UserEdges `json:"edges"`
+}
+
+// UserEdges holds the relations/edges for other nodes in the graph.
+type UserEdges struct {
+	// Card holds the value of the card edge.
+	Card *Card
 }
 
 // scanValues returns the types for scanning values from sql.Rows.