feat: use opengl

TODO:
- Texture isn't scaling properly
- I need to reverse the colours in the frag shader

src/shader/pixelbuf.vert

@@ -0,0 +1,14 @@
+#version 450 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aColor;
+layout (location = 2) in vec2 aTexCoord;
+
+out vec3 ourColor;
+out vec2 TexCoord;
+
+void main()
+{
+	gl_Position = vec4(aPos, 1.0);
+	ourColor = aColor;
+	TexCoord = vec2(aTexCoord.x, aTexCoord.y);
+}