Overhaul [1/n]

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/schema/api/background/info.go

@@ -0,0 +1,18 @@
+package background
+
+type Info struct {
+	BackgroundID int    `json:"background_id"`
+	IsSet        bool   `json:"is_set"`
+	InsertDate   string `json:"insert_date"`
+}
+
+type InfoData struct {
+	BackgroundInfo []Info `json:"background_info"`
+}
+
+type InfoResp struct {
+	Result     InfoData `json:"result"`
+	Status     int      `json:"status"`
+	CommandNum bool     `json:"commandNum"`
+	TimeStamp  int64    `json:"timeStamp"`
+}