Added video previews for alpha2 (#179)

Author: kchudy

src/content/blog/defguard-2-0-release-alpha-2.mdx

@@ -34,6 +34,9 @@ We designed this path to make evaluation and onboarding significantly easier.
 
 The main configuration wizard (first introduced in Alpha 1 and updated in this release) remains available and should be used for production-style deployment planning, where each component is launched separately.
 
+#### Video preview of this functionality:
+<iframe width="560" height="315" src="https://www.youtube.com/embed/v66TBvSLpBg?si=6Anc5bKnTYJaTKcn" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+
 ### High Availability: multiple Gateways and Edge components
 
 We added gateway setup:
@@ -46,6 +49,9 @@ And gateway management:
 
 We also updated the testing Docker Compose to deploy multiple gateways that can be load-balanced with [Envoy](https://www.envoyproxy.io/), so you can validate HA behavior in test environments.
 
+#### Video preview of this functionality:
+<iframe width="560" height="315" src="https://www.youtube.com/embed/laRnXtQndJA?si=SQWWCnu91iQGeZwC" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+
 ### Firewall management
 
 New firewall management is now available for testing:
@@ -62,6 +68,9 @@ A long-awaited feature is finally here. You can now assign IP addresses to netwo
 
 ![Static IP assignment for devices](/images/blog/alpha2.0-2/image3.png)
 
+#### Video preview of this functionality:
+<iframe width="560" height="315" src="https://www.youtube.com/embed/VQdM-2ZxxDs?si=mJBC5vxPDEjaAaxD" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
+
 ### Easier Edge and Gateway deployment
 
 When adding a new Gateway or Edge component, the wizard now includes clearer deployment guidance: