Implement present box

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

internal/handler/api/reward/list.go

@@ -0,0 +1,22 @@
+package reward
+
+import (
+	rewardapischema "honoka-chan/internal/schema/api/reward"
+	"time"
+)
+
+func rewardList() (res any, err error) {
+	res = rewardapischema.ListResp{
+		Result: rewardapischema.ListData{
+			ItemCount: 0,
+			Limit:     20,
+			Order:     0,
+			Items:     []any{},
+		},
+		Status:     200,
+		CommandNum: false,
+		TimeStamp:  time.Now().Unix(),
+	}
+
+	return res, err
+}