Add external texture tests

.github/jobs/macos.yml

@@ -18,7 +18,7 @@ jobs:
       displayName: 'Select XCode $(XCODE_VERSION)'
 
     - script: |
-        cmake -G Xcode -B buildmacOS -D CMAKE_UNITY_BUILD=$(UNITY_BUILD) -D BABYLON_DEBUG_TRACE=ON
+        cmake -G Xcode -B buildmacOS -D CMAKE_UNITY_BUILD=$(UNITY_BUILD) -D BABYLON_DEBUG_TRACE=ON -D BABYLON_NATIVE_TESTS_USE_NOOP_METAL_DEVICE=ON
       displayName: 'Generate macOS solution'
 
     - script: |

Apps/HeadlessScreenshotApp/Win32/App.cpp

@@ -109,7 +109,7 @@ int main()
 
         // Initialize the console polyfill.
         Babylon::Polyfills::Console::Initialize(env, [](const char* message, auto) {
-            std::cout << message;
+            std::cout << message << std::endl;
         });
 
         // Initialize the window, XMLHttpRequest, and NativeEngine polyfills.