Add a remaining ListXML-specific objects

Also fixes the usage of some other objects, adds proper objects for certain cases, and adds a bunch of TODOs around the new objects. There will be a lot of overhauls needed to properly support things like Devices and Slots

SabreTools.Library/Tools/Converters.cs

@@ -745,6 +745,36 @@ namespace SabreTools.Library.Tools
 #endif
         }
 
+        /// <summary>
+        /// Get Runnable value from input string
+        /// </summary>
+        /// <param name="runnable">String to get value from</param>
+        /// <returns>Runnable value corresponding to the string</returns>
+        public static Runnable AsRunnable(this string runnable)
+        {
+#if NET_FRAMEWORK
+            switch (runnable?.ToLowerInvariant())
+            {
+                case "no":
+                    return Runnable.No;
+                case "partial":
+                    return Runnable.Partial;
+                case "yes":
+                    return Runnable.Yes;
+                default:
+                    return Runnable.NULL;
+            }
+#else
+            return runnable?.ToLowerInvariant() switch
+            {
+                "no" => Runnable.No,
+                "partial" => Runnable.Partial,
+                "yes" => Runnable.Yes,
+                _ => Runnable.NULL,
+            };
+#endif
+        }
+
         /// <summary>
         /// Get SplitType value from input ForceMerging
         /// </summary>
@@ -849,7 +879,6 @@ namespace SabreTools.Library.Tools
 #endif
         }
 
-
         /// <summary>
         /// Get bool? value from input string
         /// </summary>