Add 2025-05 and 2024-04 posts to presentations (#109)

* Add flag for video buttons

* Add link for December 2024 post

* Add May 2025 webinar post

---------

Co-authored-by: James Riordon <[email protected]>

Author: MilesHarding

_includes/home-news-bar.html

@@ -31,6 +31,7 @@ <h4>{{ post.title }}</h4>
                                 {% elsif post.categories contains 'news' %}Read News Item
                                 {% elsif post.categories contains 'blog' %}Read Blog
                                 {% elsif post.categories contains 'presentation' %}View Presentation
+                                {% elsif post.categories contains 'video' %}Watch Video
                                 {% elsif post.categories contains 'event' %}Join Virtual Meetup
                                 {% else %}Read More
                                 {% endif %}

_posts/2024-12-04-slang-and-the-4d-shading-language-landscape.md

@@ -5,6 +5,6 @@ date: 2024-12-04 10:00:00 +0000
 categories: [ "video" ]
 tags: [slang]
 author: "The Khronos Group"
-image: 
-source_url: 
+image: images/events/2024-12-04-slang-and-the-3d-shading-landscape.webp
+source_url: "https://www.youtube.com/watch?v=Gyp7-yZdQws"
 ---

_posts/2025-05-20-getting-started-with-slang-draw-your-first-splat.md

@@ -0,0 +1,11 @@
+---
+layout: post
+title: "Getting Started with Slang: Draw Your First Splat"
+tagline: "Slang Virtual Meetup"
+date: 2025-05-20 08:00:00 +0000
+categories: [ "video" ]
+tags: [gaussian, splat, neural]
+author: "Shannon Woods"
+image: /images/events/2025-05-20-getting-started-with-slang-draw-your-first-splat.webp
+source_url: "https://www.youtube.com/watch?v=oGAzYih8I3Q" 
+---