Added video explainer to Products, Entitlements, Offering page (#240)

Added an embedded video explainer that covers most everything on this
page

---------

Co-authored-by: Charlie Chapman <charlie.chapman@revenuecat.com>

docs_source/🚀 Getting Started/configuring-products.md

@@ -6,6 +6,19 @@ hidden: true
 ---
 The RevenueCat dashboard allows you to specify what level of access each product should unlock for your users, which can greatly simplify your in-app code to check for subscription access. The dashboard also allows you to configure which in-app products are shown to your users remotely, so you can control how they're presented without the need to update your app. This is great for experimenting how different product configurations affect key subscription metrics.
 
+[block:embed]
+{
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+  "url": "https://www.youtube.com/watch?v=QxHeZiW4KCA",
+  "title": "RevenueCat Products, Offerings, and Entitlements Explained",
+  "favicon": "https://www.google.com/favicon.ico",
+  "image": "https://i.ytimg.com/vi/QxHeZiW4KCA/hqdefault.jpg",
+  "provider": "youtube.com",
+  "href": "https://www.youtube.com/watch?v=QxHeZiW4KCA",
+  "typeOfEmbed": "youtube"
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+[/block]
+
 There are three levels of product configuration available within RevenueCat:
   1.  Products
   2. Entitlements
@@ -140,4 +153,4 @@ The packages within an offering can be updated at any time, and their display or
 # Next Steps
 You've successfully created Entitlements, Offerings, and Packages, and have attached products to be used in your app. 
 
-Continue on to [Displaying Products](doc:displaying-products) to start showing your new Offering in your app.
+Continue on to [Displaying Products](doc:displaying-products) to start showing your new Offering in your app.