Add initial frontend and backend

backend/model.go

@@ -0,0 +1,22 @@
+package main
+
+type TopicsResponse struct {
+	Topics []Topic `json:"topics"`
+} // @name Topics
+
+type Topic struct {
+	TopicID      uint   `json:"topic_id"`
+	ForumID      uint   `json:"forum_id"`
+	Title        string `json:"title"`
+	Views        int    `json:"total_views"`
+	Replies      int    `json:"total_replies"`
+	WebPath      string `json:"web_path"`
+	PostTime     string `json:"post_time"`
+	LastPostTime string `json:"last_post_time"`
+	Votes        Votes
+} // @name Topic
+
+type Votes struct {
+	Up   int `json:"total_up"`
+	Down int `json:"total_down"`
+} // @name Votes