Login enhancements (#847)

This pull request introduces a series of enhancements to our recently
revamped login page, streamlining the user experience. These changes
were meticulously designed and developed to ensure a seamless login
process for our users while adhering to the highest standards of
usability and privacy.

src/frontend/src/pages/loginPage/index.tsx

@@ -32,8 +32,8 @@ export default function LoginPage(): JSX.Element {
 
   function signIn() {
     const user: LoginType = {
-      username: username,
-      password: password,
+      username: username.trim(),
+      password: password.trim(),
     };
     onLogin(user)
       .then((user) => {

src/frontend/src/pages/signUpPage/index.tsx

@@ -33,8 +33,8 @@ export default function SignUp(): JSX.Element {
   function handleSignup(): void {
     const { username, password } = inputState;
     const newUser: UserInputType = {
-      username,
-      password,
+      username: username.trim(),
+      password: password.trim(),
     };
     addUser(newUser)
       .then((user) => {