✨ feat: Add markdown support plus /blog (#107)

Adds `/blog` page with support for `.md` and `.mdx` files.

What we learnt in setting this up will be packages in a package `@nestri/mdx` and used to set up the `/docs` and the `/terms` and `/privacy` routes

packages/ui/.eslintrc.cjs

@@ -0,0 +1,16 @@
+module.exports = {
+  root: true,
+  extends: [
+    "@nestri/eslint-config/qwik.js",
+  ],
+  parser: "@typescript-eslint/parser",
+  parserOptions: {
+    tsconfigRootDir: __dirname,
+    project: ["./tsconfig.json"],
+    ecmaVersion: 2021,
+    sourceType: "module",
+    ecmaFeatures: {
+      jsx: true,
+    },
+  }
+};