graphics: add --gpu-assisted-validation and report fatal VkResults (#268)

* graphics: report the VkResult when a submit or fence wait fails

* graphics: add a --gpu-assisted-validation flag

* graphics: imply Vulkan validation for GPU-assisted validation

---------

Co-authored-by: nmzik <Nmzik@mail.ru>

src/common/emulatorConfig.cpp

@@ -93,6 +93,10 @@ bool SpirvDebugPrintfEnabled() {
 	return g_config->spirv_debug_printf_enabled;
 }
 
+bool GpuAssistedValidationEnabled() {
+	return g_config->gpu_assisted_validation_enabled && g_config->vulkan_validation_enabled;
+}
+
 bool RenderDocEnabled() {
 	return g_config->renderdoc_enabled;
 }