add getting started video (#325)

Author: raulb

docs/0-what-is/1-getting-started.mdx

@@ -5,6 +5,18 @@ sidebar_position: 0
 slug: '/getting-started'
 ---
 
+
+<div style={{ position: 'relative', paddingBottom: '56.25%', height: 0, overflow: 'hidden', maxWidth: '100%' }}>
+  <iframe
+    src="https://www.loom.com/embed/4b9797ab29364fa4beb91cf9604b503a?sid=3afbd018-e8cf-4c97-a4ce-bf59d9c4cc3f?hideEmbedTopBar=true&hide_title=true&hide_owner=true&hide_share=true&hide_speed=true"
+    webkitallowfullscreen
+    frameborder="0"
+    mozallowfullscreen
+    allowFullScreen
+    style={{ position: 'absolute', top: 0, left: 0, width: '100%', height: '100%' }}
+  ></iframe>
+</div>
+
 ## Our goal
 
 In this guide, our goal will be to stream information about flights from an