chore(release): prepare public source release

fixtures/managed/diagnose-src/ZeroHarmony/Harmony.cs

@@ -0,0 +1,10 @@
+namespace HarmonyLib
+{
+    public static class Harmony
+    {
+        public static string VersionInfo()
+        {
+            return "2.2.2";
+        }
+    }
+}