fix: refactor so that canvas can be used in workers (using @nativescript-community/ui-canvas/canvas)

Author: farfromrefuge

src/ui-canvas/canvas.android.ts

@@ -0,0 +1,13 @@
+import { Device } from '@nativescript/core';
+
+import { Rect, RectF } from './canvas';
+
+export const sdkVersion = parseInt(Device.sdkVersion, 10);
+
+export function createRect(x: number, y: number, w: number, h: number) {
+    return new Rect(x, y, x + w, y + h);
+}
+
+export function createRectF(x: number, y: number, w: number, h: number) {
+    return new RectF(x, y, x + w, y + h);
+}