Move one more method to better class

SabreTools.Core/ArrayExtensions.cs

@@ -11,5 +11,29 @@ namespace SabreTools.Core
         {
             return array == null || array.Length == 0;
         }
+
+        //// <summary>
+        /// Returns if the first byte array starts with the second array
+        /// </summary>
+        public static bool StartsWith(this byte[] arr1, byte[] arr2, bool exact = false)
+        {
+            // If we have any invalid inputs, we return false
+            if (arr1 == null || arr2 == null
+                || arr1.Length == 0 || arr2.Length == 0
+                || arr2.Length > arr1.Length
+                || (exact && arr1.Length != arr2.Length))
+            {
+                return false;
+            }
+
+            // Otherwise, loop through and see
+            for (int i = 0; i < arr2.Length; i++)
+            {
+                if (arr1[i] != arr2[i])
+                    return false;
+            }
+
+            return true;
+        }
     }
 }