feat: add the remaining things

* DisableMaintenance
* UnlockAllMusic
* UnlockGameEvents
* UnlockMemoryChapters

UnlockAllMusic/MU3.DataStudio/patch_MusicData.cs

@@ -0,0 +1,24 @@
+namespace MU3.DataStudio;
+
+class patch_MusicData: MusicData {
+    public new int CostToUnlock {
+        get {
+            return 0;
+        }
+        private set { /* nop */ }
+    }
+
+    public new bool PossessingFromTheBeginning {
+        get {
+            return true;
+        }
+        private set { /* nop */ }
+    }
+
+    public new bool IsLockedAtTheBeginning {
+        get {
+            return false;
+        }
+        private set { /* nop */ }
+    }
+}