feat: add 4 things

* DisableEncryption
* LoadBoost
* UnlockFrameRate
* UnlockMasterDifficulty

WIP, not fully reviewed/tested yet.

UnlockMasterDifficulty/MU3.ViewData/patch_MusicViewData.cs

@@ -0,0 +1,13 @@
+using MonoMod;
+
+namespace MU3.ViewData;
+
+[MonoModPatch("global::MU3.ViewData.MusicViewData")]
+public class patch_MusicViewData {
+    public bool isMasterLock {
+        get {
+            return false;
+        }
+        set { /* nop */ }
+    }
+}