adding gfx and ui stuff

gfx/assets/shaders/phong.vertex.glsl

@@ -0,0 +1,19 @@
+#version 330 core
+layout (location = 0) in vec3 a_xyz;
+layout (location = 1) in vec2 a_uv;
+layout (location = 2) in vec3 a_normal;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 projection;
+
+out vec3 normal;
+out vec3 frag_position;
+
+void main() {
+    vec4 a_xyz_vec4 = vec4(a_xyz, 1);
+
+    frag_position = (model * a_xyz_vec4).xyz;
+    normal = mat3(transpose(inverse(model))) * a_normal;
+    gl_Position = projection * view * model * a_xyz_vec4;
+}