minimal scale system

src/API.ts

@@ -1,4 +1,5 @@
 import { Editor } from "./main";
+import { scale } from './Scales';
 import { tryEvaluate } from "./Evaluator";
 import { MidiConnection } from "./IO/MidiConnection";
 // @ts-ignore
@@ -17,6 +18,8 @@ export class UserAPI {
 
     log = console.log
 
+    scale = scale
+
     rate(rate: number): void {
         // TODO: Implement this. This function should change the rate at which the global script
         // is evaluated. This is useful for slowing down the script, or speeding it up. The default