feature/issue 34 blog landing page and all posts

greenwood.config.js

@@ -4,7 +4,8 @@ import { greenwoodPluginCssModules } from "./plugin-css-modules.js";
 export default {
   prerender: true,
   plugins: [greenwoodPluginCssModules(), greenwoodPluginImportRaw()],
+  activeFrontmatter: true,
   markdown: {
-    plugins: ["@mapbox/rehype-prism"],
+    plugins: ["@mapbox/rehype-prism", "rehype-slug", "rehype-autolink-headings", "remark-github"],
   },
 };