Codegen build w/CK (#1428)

* initial push

* cleaned up compiler errors

* removed commented code

* build codegen folder only for gfx9 targets

* remove separate stage for codegen tests from CI

* removed commented code from CMake

---------

Co-authored-by: Illia Silin <98187287+illsilin@users.noreply.github.com>
Co-authored-by: illsilin <Illia.Silin@amd.com>

[ROCm/composable_kernel commit: da214a5a58]

codegen/test/rtc/src/kernel.cpp

@@ -118,4 +118,4 @@ void kernel::launch(hipStream_t stream,
     launch_kernel(impl->fun, stream, global, local, kernargs.data(), size);
 }
 
-} // namespace rtc
+} // namespace rtc

codegen/test/rtc/src/tmp_dir.cpp

@@ -45,4 +45,4 @@ void tmp_dir::execute(const std::string& cmd) const
 
 tmp_dir::~tmp_dir() { std::filesystem::remove_all(this->path); }
 
-} // namespace rtc
+} // namespace rtc