Added ogent for entity code gen.

ent/entc.go

@@ -0,0 +1,29 @@
+//go:build ignore
+
+package main
+
+import (
+	"log"
+
+	"ariga.io/ogent"
+	"entgo.io/contrib/entoas"
+	"entgo.io/ent/entc"
+	"entgo.io/ent/entc/gen"
+	"github.com/ogen-go/ogen"
+)
+
+func main() {
+	spec := new(ogen.Spec)
+	oas, err := entoas.NewExtension(entoas.Spec(spec))
+	if err != nil {
+		log.Fatalf("creating entoas extension: %v", err)
+	}
+	ogent, err := ogent.NewExtension(spec)
+	if err != nil {
+		log.Fatalf("creating ogent extension: %v", err)
+	}
+	err = entc.Generate("./schema", &gen.Config{}, entc.Extensions(ogent, oas))
+	if err != nil {
+		log.Fatalf("running ent codegen: %v", err)
+	}
+}