Created approval reminder worker

FabApprovalWorkerService/Utilities/DateTimeUtilities.cs

@@ -0,0 +1,14 @@
+namespace FabApprovalWorkerService.Utilities;
+
+public class DateTimeUtilities {
+    public static DateTime MIN_DT = new DateTime(1753, 1, 1, 0, 0, 0);
+    public static DateTime MAX_DT = new DateTime(9999, 12, 31, 11, 59, 59);
+
+    public static string GetDateAsStringMinDefault(DateTime dt) {
+        return dt > MIN_DT ? dt.ToString("yyyy-MM-dd HH:mm") : "";
+    }
+
+    public static string GetDateAsStringMaxDefault(DateTime dt) {
+        return dt < MAX_DT ? dt.ToString("yyyy-MM-dd HH:mm") : "";
+    }
+}