Started migrating workflow controller

shared-operations/src/functions/common/getImagesOnPage.ts

@@ -0,0 +1,15 @@
+
+import { PDFPageProxy } from "pdfjs-dist/types/src/display/api.js";
+import * as PDFJS from 'pdfjs-dist';
+
+export async function getImagesOnPage(page: PDFPageProxy) {
+    const ops = await page.getOperatorList();
+    const images: any = [];
+    for (var j=0; j < ops.fnArray.length; j++) {
+        if (ops.fnArray[j] == PDFJS.OPS.paintImageXObject) {
+            const image = page.objs.get(ops.argsArray[j][0]);
+            images.push(image);
+        }
+    }
+    return images;
+}