init: hgmj server initial commit

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

common/timeutil/timeslice/timeSlice.go

@@ -0,0 +1,16 @@
+package timeslice
+
+import "time"
+
+// TimeSlice
+type TimeSlice []time.Time
+
+func (t TimeSlice) Len() int {
+	return len(t)
+}
+func (t TimeSlice) Swap(i, j int) {
+	t[i], t[j] = t[j], t[i]
+}
+func (t TimeSlice) Less(i, j int) bool {
+	return t[i].Before(t[j])
+}