Refactor: move vulkan detection to own header

src/detection/vulkan.c

@@ -1,4 +1,5 @@
 #include "fastfetch.h"
+#include "detection/vulkan.h"
 
 #include <pthread.h>
 

src/detection/vulkan.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#ifndef FF_INCLUDED_detection_vulkan
+#define FF_INCLUDED_detection_vulkan
+
+#include "fastfetch.h"
+
+typedef struct FFGPUResult
+{
+    FFstrbuf vendor;
+    FFstrbuf name;
+    FFstrbuf driver;
+    double temperature;
+} FFGPUResult;
+
+typedef struct FFVulkanResult
+{
+    FFstrbuf driver;
+    FFstrbuf apiVersion;
+    FFstrbuf conformanceVersion;
+    FFlist devices; //List of FFGPUResult
+} FFVulkanResult;
+
+const FFVulkanResult* ffDetectVulkan(const FFinstance* instance);
+
+#endif