feat(vulkan): vulkan 1.4 core with the user interface and the launcher, shaders split into ogl46/vk14 with SPIR-V binaries loaded first

shaders/vk14/imgui.frag

@@ -0,0 +1,18 @@
+#version 460 core
+#define STAGE_FRAGMENT 1
+// the user interface (imgui): the colour of the vertices times the texture of the draw (the font, an image, a texture), pushed
+// with the draw
+
+#include "common.glsl"
+
+layout(location = 0) in vec2 f_uv;
+layout(location = 1) in vec4 f_colour;
+
+layout(set = UI_SET, binding = UI_TEXTURE) uniform sampler2D ui_texture;
+
+layout(location = 0) out vec4 out_colour;
+
+void main()
+{
+	out_colour = FBOUT(f_colour * texture(ui_texture, f_uv));
+}