JS -- Add a sandbox based on quickjs

* quickjs-eval.js has been generated using https://github.com/mozilla/pdf.js.quickjs/
 * lazy load of sandbox code
 * Rewrite tests to use the sandbox
 * Add a task `watch-sandbox` which update bundle pdf.sandbox.js on change in the sandbox code

src/scripting_api/util.js

@@ -49,6 +49,9 @@ class Util extends PDFObject {
   }
 
   crackURL(cURL) {
+    if (typeof cURL !== "string") {
+      throw new TypeError("First argument of util.crackURL must be a string");
+    }
     return this._crackURL(cURL);
   }