Add texture handler

Added functionality to load images as textures and bind them to meshes.

graphics/shaders/shader.vert

@@ -8,12 +8,14 @@ layout(binding = 0) uniform UniformBufferObject {
 
 layout(location = 0) in vec3 inPosition;
 layout(location = 1) in vec3 inColor;
+layout(location = 2) in vec2 inTexCoord;
 
-layout(location = 2) in vec3 instancePosition;
-layout(location = 3) in vec3 instanceRotation;
-layout(location = 4) in float instanceScale;
+layout(location = 3) in vec3 instancePosition;
+layout(location = 4) in vec3 instanceRotation;
+layout(location = 5) in float instanceScale;
 
 layout(location = 0) out vec3 fragColor;
+layout(location = 1) out vec2 fragTexCoord;
 
 void main()
 {
@@ -59,4 +61,5 @@ void main()
     gl_Position = ubo.proj * ubo.view * ubo.model * pos;
 
     fragColor = inColor;
+    fragTexCoord = inTexCoord;
 }