refactor: flatten routes

app/routes/blog._index.tsx

@@ -1,8 +1,8 @@
 import { useLoaderData } from "@remix-run/react";
+import { EmptyState } from "~/components/EmptyState";
+import { PostPreview } from "~/components/PostPreview";
 import { Title } from "~/components/Title";
 import { findPosts } from "~/utils/posts.server";
-import { EmptyState } from "./EmptyState";
-import { PostPreview } from "./PostPreview";
 
 export const handle = {
   to: "/",

app/routes/blog.tsx

@@ -1,7 +1,7 @@
 import { Link } from "@remix-run/react";
 import { Outlet } from "react-router-dom";
 import { LinkWrapper } from "~/components/LinkWrapper";
-import { useMatch } from "./useMatch";
+import { useMatch } from "~/hooks/useMatch";
 
 export default function () {
   const { handle } = useMatch();