Initial steps on GPU printing example (#1197)

* Initial steps on GPU printing example

This change is checkpointing work on a new Slang example that shows how a "GPU `printf()`" can be implemented almost entirely in user space thanks to a combination of Slang language and API features.

The example is not perfect as it stands today due to limitations in our current handling of hashed string literals:

* At call sites where a string literal is passed, we currently have to explicitly invoke `getStringHash()` to get the hash code, because we don't currently support `String` as a function argument/parameter type.

* On the implementation side, because strings are passed as their `int` hash codes, we can't tell them apart from ordinary `int` arguments. The current code handles this by assuming an `int` is *always* a hashed string, which obviously isn't appropriate.

There are plenty of other limitations in the implementation presented, but the above are the two main things I'd like to address in follow-up work.
I would like to checkpoint this work on the application first, in order to keep work on the Slang implementation and the example as separate as possible.

* typo

1 files changed, 3 insertions, 0 deletions

diff --git a/premake5.lua b/premake5.lua
index f783173bc..93bbd0569 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -443,6 +443,9 @@ if isTargetWindows then
 
     -- Let's go ahead and set up the projects for our other example now.
     example "model-viewer"
+
+    example "gpu-printing"
+        kind "ConsoleApp"
 end
 
 example "cpu-hello-world"