Add Blog (#83)

* add rss ingestor

* it works

* blog working

* fix the theme switcher

* finalize blog, re-add store

* fix terraform for blog_scraper

* update sitemap

* update readme

webapp/public/sitemap.xml

@@ -72,5 +72,9 @@
     <loc>https://deflock.me/store</loc>
     <changefreq>daily</changefreq>
   </url>
+  <url>
+    <loc>https://deflock.me/blog</loc>
+    <changefreq>daily</changefreq>
+  </url>
 </urlset>