Create linear algebra module

gpu.h

@@ -1,23 +1,13 @@
 #ifndef GPU_H
 #define GPU_H
 
+#include "linear_alg.h"
+
 #define GLFW_INCLUDE_VULKAN
 #include <GLFW/glfw3.h>
 
 #define SWAPCHAIN_IMG_BUFFER_SIZE 4
 
-typedef struct {
-	float x, y, z;
-} vec3_t;
-
-typedef struct {
-	float x, y, z, w;
-} vec4_t;
-
-typedef struct {
-	vec4_t x, y, z, w;
-} mat4_t;
-
 typedef struct {
 	vec3_t position;
 	vec3_t colour;