init: hgmj server initial commit

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

generate/tpl/models/v/app.tpl

@@ -0,0 +1,12 @@
+package {{PackageTableName}}mod
+
+import (
+	"time"
+
+    "go.mongodb.org/mongo-driver/bson/primitive"
+)
+
+// {{StructName}}Info 移动端返回内容
+type {{StructName}}Info struct {
+	{{AppRespStructFields}}
+}