Add NUnit test chassis and Powershelll test generator scripts

Il2CppTests/generate-tests.ps1

@@ -0,0 +1,33 @@
+# Copyright 2019 Katy Coe - http://www.hearthcode.org - http://www.djkaty.com
+# All rights reserved.
+
+# Generate Tests.cs
+$testGen = "$PSScriptRoot/Tests.cs"
+$bin = "$PSScriptRoot/TestBinaries"
+
+echo @"
+// THIS FILE IS AUTO-GENERATED BY GENERATE-TESTS.PS1
+// DO NOT EDIT
+
+using NUnit.Framework;
+
+namespace Il2CppInspector
+{
+	public partial class TestRunner
+	{
+"@ > $testGen
+
+gci $bin | % {
+	echo @"
+		[Test]
+		public void $($_.Name.Replace("-","_").Replace(" ","_").Replace(".","_"))() {
+			runTest(@"$($_.FullName)");
+		}
+
+"@ >> $testGen
+}
+
+echo @"
+	}
+}
+"@ >> $testGen