hmd2: initialize a virtual headset with --vr

Inspired by https://github.com/KytyPS5/KytyPS5/pull/607

Co-authored-by: BlackCAT <52720489+psnwd@users.noreply.github.com>

src/common/emulatorConfig.cpp

@@ -55,6 +55,10 @@ bool FullscreenEnabled() {
 	return g_config->fullscreen_enabled;
 }
 
+bool VrEnabled() {
+	return g_config->vr_enabled;
+}
+
 uint32_t GetVblankFrequency() {
 	return std::clamp(g_config->vblank_frequency, 30u, 360u);
 }

src/common/emulatorConfig.h

@@ -46,6 +46,7 @@ struct ConfigOptions {
 	PresentMode            present_mode                = PresentMode::Mailbox;
 	int32_t                gpu_index                   = -1;
 	bool                   fullscreen_enabled          = false;
+	bool                   vr_enabled                  = false;
 	uint32_t               vblank_frequency            = 60;
 	uint32_t               console_language            = DEFAULT_CONSOLE_LANGUAGE;
 	bool                   vulkan_validation_enabled   = false;
@@ -79,6 +80,7 @@ int32_t  GetUserId();
 PresentMode GetPresentMode();
 int32_t GetGpuIndex();
 bool     FullscreenEnabled();
+bool     VrEnabled();
 uint32_t GetVblankFrequency();
 uint32_t GetConsoleLanguage();
 bool     VulkanValidationEnabled();