Add game framework and whitebox level

game/assets/shaders/sprite.vert

@@ -0,0 +1,16 @@
+#version 330 core
+layout (location = 0) in vec2 a_position;
+layout (location = 1) in vec2 a_texCoord;
+layout (location = 2) in vec4 a_color;
+
+uniform mat4 u_view;
+uniform mat4 u_projection;
+
+out vec2 v_texCoord;
+out vec4 v_color;
+
+void main() {
+  v_texCoord = a_texCoord;
+  v_color = a_color;
+  gl_Position = u_projection * u_view * vec4(a_position, 0.0, 1.0);
+}