feat: add entgo mixin and sonyflake.

entgo/mixin/remark.go

@@ -0,0 +1,21 @@
+package mixin
+
+import (
+	"entgo.io/ent"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/mixin"
+)
+
+type Remark struct {
+	mixin.Schema
+}
+
+func (Remark) Fields() []ent.Field {
+	return []ent.Field{
+		field.String("remark").
+			Comment("备注").
+			Default("").
+			Optional().
+			Nillable(),
+	}
+}