Add sitemap to wpcarro.dev

- Create ./website directory
- Add a sitemap to wpcarro.dev
- Move covid-uk directory to sandbox directory

TODO: Next sandbox, blog, and learn in the website directory

covid-uk/styles.css

@@ -1,28 +0,0 @@
-@tailwind base;
-
-body {
-  @apply font-mono;
-}
-
-h1 {
-  @apply text-3xl mb-5 font-bold;
-}
-
-h2 {
-  @apply text-2xl mb-5 font-bold;
-}
-
-h3 {
-  @apply text-xl mb-5 font-bold;
-}
-
-a {
-  @apply text-blue-600 underline;
-}
-
-p {
-  @apply mt-2 mb-5;
-}
-
-@tailwind components;
-@tailwind utilities;