fix(plugin): shim definePlugin for now [ci skip]

src/index.ts

@@ -8,3 +8,13 @@ export * from './globals';
 export * from './webpack';
 export * from './utils';
 export * from './class-mapper';
+
+/**
+ * @deprecated use @decky/api instead
+ */
+export const definePlugin = (fn: any): any => {
+    return (...args: any[]) => {
+      // TODO: Maybe wrap this
+      return fn(...args);
+    };
+};