feat: embedd resource yt video in cadence lang docs

Author: 0xLisanAlGaib

docs/tutorial/03-resources.md

@@ -19,6 +19,17 @@ socialImageTitle: Cadence Resources
 socialImageDescription: Resource smart contract image.
 ---
 
+<div style={{ position: 'relative', paddingBottom: '56.25%', height: 0, overflow: 'hidden', maxWidth: '100%' }}>
+  <iframe 
+    style={{ position: 'absolute', top: 0, left: 0, width: '100%', height: '100%' }}
+    src="https://www.youtube.com/embed/oHo6-bnb97Y" 
+    title="YouTube video player" 
+    frameborder="0" 
+    allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
+    allowfullscreen
+  ></iframe>
+</div>
+
 This tutorial builds your understanding of [accounts] and how to interact with them by introducing [resources]. Resources are a special type found in Cadence that are used for any virtual items, properties, or any other sort of data that are **owned** by an account. They can **only exist in one place at a time**, which means they can be moved or borrowed, but they **cannot be copied**.
 
 Working with resources requires you to take a few more steps to complete some tasks, but this level of explicit control makes it nearly impossible to accidentally duplicate, break, or burn an asset.