test: added a react application test (in the browser)

test/evaluated-web-bundle/fixtures/app.mjs

@@ -0,0 +1,13 @@
+export async function app({root}){
+
+    const states = ['started', 'tick', 'ended'];
+
+    for(let state of states){
+        const text = `App ${state}`;
+        console.log(`Test my sourcemap: ${text}`);
+        root.innerHTML = `<div style="align-self: center"><b>${text}</b></div>`;
+        await new Promise((resolve,reject)=>
+            setTimeout(()=>resolve(), 10)
+        );
+    }
+}