[ui] split 2D and 3D viewers into separate modules

+ remove historical MayaCameraController

meshroom/ui/qml/Viewer3D/Materials/shaders/robustwireframe.vert

@@ -0,0 +1,21 @@
+#version 330 core
+
+in vec3 vertexPosition;
+in vec3 vertexNormal;
+
+out EyeSpaceVertex {
+    vec3 position;
+    vec3 normal;
+} vs_out;
+
+uniform mat4 modelView;
+uniform mat3 modelViewNormal;
+uniform mat4 mvp;
+
+void main()
+{
+    vs_out.normal = normalize( modelViewNormal * vertexNormal );
+    vs_out.position = vec3( modelView * vec4( vertexPosition, 1.0 ) );
+
+    gl_Position = mvp * vec4( vertexPosition, 1.0 );
+}