Add simple component for the interview

frontend/Todo.tsx

@@ -0,0 +1,56 @@
+import React, { useState, useEffect } from "react";
+
+let todos = [];
+
+export const Todo = () => {
+  const [inputValue, setInputValue] = useState("");
+  const [error, setError] = useState("");
+  const [isLoading, setIsLoading] = useState(false);
+
+  useEffect(() => {
+    console.log("Todo was updated:", todos);
+    document.title = `${todos.length} todos`;
+  }, []);
+
+  const addTodo = () => {
+    todos.push(inputValue);
+    setInputValue("");
+    setIsLoading(true);
+
+    setTimeout(() => {
+      setIsLoading(false);
+    }, 1000);
+  };
+
+  return (
+    <div style={{ padding: "20px", border: "1px solid black" }}>
+      <h1>Todo List</h1>
+
+      {isLoading ? (
+        <p>Loading...</p>
+      ) : error ? (
+        <p style={{ color: "red" }}>{error}</p>
+      ) : null}
+
+      <input
+        value={inputValue}
+        onChange={(e) => setInputValue(e.target.value)}
+        onKeyPress={(e) => e.key === "Enter" && addTodo()}
+      />
+      <button onClick={addTodo}>Add Todo</button>
+
+      <div>
+        {todos.map((todo, index) => (
+          <div
+            key={index}
+            onClick={() => {
+              todos.splice(index, 1);
+            }}
+          >
+            {todo}
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+};