feat(render): implement Campaign AR and terrain fidelity

src/AcDream.App/Rendering/Shaders/atmospheric_bloom_blur.vert

@@ -0,0 +1,10 @@
+#version 430 core
+
+layout(location = 0) out vec2 vUv;
+
+void main()
+{
+    vec2 triangle = vec2((gl_VertexID << 1) & 2, gl_VertexID & 2);
+    gl_Position = vec4(triangle * 2.0 - 1.0, 0.0, 1.0);
+    vUv = vec2(triangle.x, 1.0 - triangle.y);
+}