Add presentation from April 1st

meetings/2024/LDM-2024-04-01.md

@@ -13,6 +13,7 @@
 ### Async improvements (Async2)
 
 https://github.com/dotnet/runtimelab/blob/e69dda51c7d796b8122d0f55b560bc44094a4bec/docs/design/features/runtime-handled-tasks.md  
+[Presentation](./LDM-2024-04-01-presentation.pdf)
 
 Today, we looked at a proposal for improving `async` in .NET. The runtime has been experimenting with several different approaches here. Their first prototype, green threading, was designed to try
 and solve the metastability issue where sync-over-async can cause threadpool exhaustion. While this was an interesting experiment, their ultimate conclusion was to not move forward with this