Added CruiseAssist and AutoPilot

CruiseAssist/Commons/ListUtils.cs

@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+using System.Linq;
+
+namespace CruiseAssist.Commons;
+
+internal static class ListUtils
+{
+    public static string ToString(List<int> list)
+    {
+        return list == null || list.Count == 0 ? "" : list.Select(id => id.ToString()).Aggregate((a, b) => a + "," + b);
+    }
+
+    public static string ToString(List<string> list)
+    {
+        return list == null || list.Count == 0 ? "" : list.Aggregate((a, b) => a + "," + b);
+    }
+
+    public static List<int> ParseToIntList(string str)
+    {
+        return string.IsNullOrEmpty(str)
+            ? []
+            : str.Split(',').Where(s => int.TryParse(s, out _)).Select(int.Parse).ToList();
+    }
+
+    public static List<string> ParseToStringList(string str)
+    {
+        return string.IsNullOrEmpty(str) ? [] : str.Split(',').ToList();
+    }
+}