apps/web: set form submit action

apps/web/components/Form.jsx

@@ -12,7 +12,7 @@ export default function Form() {
   const error = invalid ? <Error>Неверный логин или пароль</Error> : null;
 
   return (
-    <form className={styles.form}>
+    <form className={styles.form} method="post" action="/signin">
       <H3>{title}</H3>
       <Input name="login" type="text" placeholder="Логин" required autoComplete="on" />
       <Input name="password" type="password" placeholder="Пароль" required autoComplete="on" />