add basic login, signup, navbar

frontend/src/screens/Login.tsx

@@ -0,0 +1,19 @@
+import { Link } from "react-router-dom"
+import "../styles/Login.css"
+export default function Login() {
+    return (
+        <main>
+            <form>
+                <h1>Login</h1>
+                <div className="form-inputs">
+                    <label htmlFor="username">Username</label>
+                    <input type="text" name="username" id="username" />
+                    <label htmlFor="password">Password</label>
+                    <input type="password" name="password" id="password" />
+                </div>
+                <button>Login</button>
+                <p>or <Link to="/signup">Sign up</Link></p>
+            </form>
+        </main>
+    );
+}