better separation of swapchain, flight, and uber

src/shaders/triangle.vert

@@ -1,7 +1,7 @@
 #version 450
 
 layout (set = 0, binding = 0) uniform CameraBuffer {
-    mat4 viewproj;
+    mat4 mat;
 } cam;
 
 layout (location = 0) in vec4 a_pos;
@@ -10,6 +10,6 @@ layout (location = 1) in vec3 a_color;
 layout (location = 0) out vec3 v_color;
 
 void main() {
-    gl_Position = a_pos * cam.viewproj;
+    gl_Position = a_pos * cam.mat;
     v_color = a_color;
 }