[next] Add basic integrations tests (#1576)

* [next] WIP: Add basic integrations tests

* fix typos in  README.md

* Update README.md to specify when files are _ files ignored

---------

Co-authored-by: Fabio Pliger <fpliger@users.noreply.github.com>

pyscript.core/test/integration/micropython.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const { shared, python } = require('./_shared.js');
+
+module.exports = (playwright, baseURL) => {
+    const { test } = playwright;
+
+    test('MicroPython bootstrap', python.bootstrap(playwright, baseURL));
+
+    test('MicroPython fetch', python.fetch(playwright, `${baseURL}/fetch.html`));
+
+    test('MicroPython to MicroPython Worker', shared.worker(playwright, `${baseURL}/worker.html`));
+
+    test('MicroPython Worker window', shared.workerWindow(playwright, baseURL));
+
+    test('MicroPython to Wasmoon Worker', shared.worker(playwright, `${baseURL}/worker-lua.html`));
+};