build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/utils/asyncForEach.ts

@@ -0,0 +1,10 @@
+async function asyncForEach(
+  array: Array<any>,
+  callback: (arg0: any, arg1: number, arg2: Array<any>) => void
+): Promise<void> {
+  for (let index = 0; index < array.length; index += 1) {
+    callback(array[index], index, array);
+  }
+}
+
+export { asyncForEach };