Add timestamp & edited to chatroom and also do the same stuff from 2nd last commit in here in edit popup

Assets/Scripts/Tools.cs

@@ -107,4 +107,22 @@ public static class Tools
 
         return (totalXp, flooredLevel, currentXpInLevel, totalXpForLevel, percentDone);
     }
+
+    public static string FormatHumanTime(long unixTimestamp)
+    {
+        DateTime date = DateTimeOffset.FromUnixTimeSeconds(unixTimestamp).LocalDateTime;
+        DateTime now = DateTime.Now;
+
+        bool isToday = date.Year == now.Year && date.Month == now.Month && date.Day == now.Day;
+        DateTime yesterday = now.AddDays(-1);
+        bool isYesterday = date.Year == yesterday.Year && date.Month == yesterday.Month && date.Day == yesterday.Day;
+
+        string timeStr = date.ToString("t");
+
+        if (isToday) return timeStr;
+        if (isYesterday) return $"Yesterday at {timeStr}";
+
+        string dateStr = date.ToShortDateString();
+        return $"{dateStr}, {timeStr}";
+    }
 }