init: hgmj server initial commit

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

app/router/immessage.go

@@ -0,0 +1,15 @@
+package router
+
+import (
+	"91jd-server/app/api/immessagectrl"
+	"github.com/gin-gonic/gin"
+)
+
+// imMessage 移动端接口  todo: 在 app/router/base.go 中新增路由
+func imMessageRouter(router *gin.RouterGroup) {
+	group := router.Group("/immessage")
+	{
+		group.GET("/list", immessagectrl.List)
+		group.POST("/send", immessagectrl.Send)
+	}
+}