Added not found page

src/errors/404.tsx

@@ -0,0 +1,18 @@
+import { Column, Logo, Page, Button, Padding } from '../components'
+
+export default function NotFound() {
+  return (
+    <>
+      <Page alignment="column">
+        <Column>
+          <Logo size={200} />
+          <h1>Error 404</h1>
+          <h2>Page not found</h2>
+          <Padding top={2} left={0} right={0} bottom={0}>
+            <Button edges="curved" to="/" label="Return"></Button>
+          </Padding>
+        </Column>
+      </Page>
+    </>
+  )
+}