Fixing the names of shaders in the passes. The loadShader utility function now returns the code and the module, since I'm hoping to parse uniform buffer layouts from the code.

webgpu_notes.txt

@@ -42,7 +42,8 @@ Bind groups let you bind a bunch of resources at once
 Render bundles let you reissue commands
 
 You can only use up to FOUR bind groups on your laptop's device!
-Here's an annoying gotcha: uniform buffers are like classic UBOs, and have esoteric ("std140") layout requirements!
+Here's an annoying gotcha: uniform buffers have layout requirements listed in the WGSL spec
+	https://gpuweb.github.io/gpuweb/wgsl/#structure-layout-rules
 
 Texture lookup in vertex shader
 	You can only sample textures in fragment stages