Add cairo interface.

src/visual_elements/CMakeLists.txt

@@ -0,0 +1,19 @@
+list(APPEND visual_elements_LIB_INCLUDES
+    GeometryElement.cpp
+    RectangleElement.cpp
+    TextElement.cpp
+    VisualLayer.cpp
+)
+
+add_library(visual_elements SHARED ${visual_elements_LIB_INCLUDES})
+
+target_include_directories(visual_elements PUBLIC
+                          "${PROJECT_SOURCE_DIR}/src/core/"
+                          "${PROJECT_SOURCE_DIR}/src/geometry/"
+                          )
+
+target_link_libraries(visual_elements PUBLIC core geometry)
+
+set_property(TARGET visual_elements PROPERTY FOLDER src)
+
+set_target_properties( visual_elements PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON )