cli: add --gpu <index> to select a Vulkan physical deviceFeature gpu select (#417)

* cli: add --gpu <index> to select a Vulkan physical device

Select the Vulkan physical device by enumeration index, defaulting to
automatic selection (-1). Invalid or out-of-range indices fall back to
automatic selection with a clear message, and the selected device is
logged.

Co-Authored-By: Claude <noreply@anthropic.com>

* cli: reject invalid --gpu index, translate comments, apply clang-format

An invalid --gpu index now prints an error and exits with code 1 (usage),
matching --user-id / --present-mode / --console-language. The automatic
fallback is kept only for out-of-range indices detected at runtime.
Comments translated to English and the touched files brought in line
with clang-format (pre-commit v22.1.3).

Co-Authored-By: Claude <noreply@anthropic.com>

* cli: simplify Vulkan device selection

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: nmzik <Nmzik@mail.ru>

src/graphics/presentation/window/vulkanWindow.cpp

@@ -157,6 +157,10 @@ static void VulkanFindPhysicalDevice(vk::Instance instance, vk::SurfaceKHR surfa
 	    });
 	EXIT_NOT_IMPLEMENTED(devices.empty());
 
+	if (Config::GetGpuIndex() >= 0) {
+		devices = {devices[Config::GetGpuIndex()]};
+	}
+
 	vk::PhysicalDevice  best_device       = nullptr;
 	uint32_t            best_queue_family = static_cast<uint32_t>(-1);
 	SurfaceCapabilities best_capabilities;