* Disable PSO caching if Renderdoc or Pix dlls are loaded as they conflict with dx12 api
* Add support for command line param --enablePixGPU which manually loads the pix gpu capture dll
- This will allow pix to attach to a running process if the enablePixGPU is enabled
- Support for enabling/disabling gpu markers based on enablePixGPU
Signed-off-by: moudgils <moudgils@amazon.com>