feat: redesign my webiste from scratch

- remove hugo and paper box theme
- inspiration https://jay.fish
- use astro based system

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>

astro.config.mjs

@@ -0,0 +1,28 @@
+import { defineConfig } from "astro/config";
+import sitemap from "@astrojs/sitemap";
+import rehypeImageAlign from "./src/lib/rehype-image-align.ts";
+import rehypeSlug from "rehype-slug";
+import rehypeAutolinkHeadings from "rehype-autolink-headings";
+
+export default defineConfig({
+  site: "https://avinal.space",
+  output: "static",
+  integrations: [sitemap()],
+  markdown: {
+    shikiConfig: {
+      theme: "github-dark-default",
+    },
+    rehypePlugins: [
+      rehypeImageAlign,
+      rehypeSlug,
+      [
+        rehypeAutolinkHeadings,
+        {
+          behavior: "append",
+          properties: { className: ["heading-anchor"], ariaLabel: "Link to this section" },
+          content: { type: "text", value: "#" },
+        },
+      ],
+    ],
+  },
+});