added sample user profile page (#133)

src/pages/profile/[username].tsx

@@ -0,0 +1,27 @@
+import React, { FC } from 'react';
+
+import { useRouter } from 'next/router';
+import { RouteComponentProps } from 'react-router';
+
+import { PageTitle } from '~/components/common/PageTitle';
+import { useGlobalLoader } from '~/hooks/dom/useGlobalLoader';
+import { ProfileLayout } from '~/layouts/ProfileLayout';
+import { FlowProvider } from '~/utils/providers/FlowProvider';
+import { getPageTitle } from '~/utils/ssr/getPageTitle';
+
+type ProfilePageProps = RouteComponentProps<{ username: string }>;
+
+const ProfilePage: FC<ProfilePageProps> = () => {
+  const { query } = useRouter();
+
+  useGlobalLoader();
+
+  return (
+    <FlowProvider>
+      <PageTitle title={getPageTitle('Флоу')} />
+      <ProfileLayout username={query.username as string} />
+    </FlowProvider>
+  );
+};
+
+export default ProfilePage;