start texture cache for contacts (avatars)

src/CMakeLists.txt

@@ -23,6 +23,8 @@ add_executable(tomato
 	./texture_uploader.hpp
 	./sdlrenderer_texture_uploader.hpp
 	./sdlrenderer_texture_uploader.cpp
+	./texture_cache.hpp
+	./texture_cache.cpp
 	./sdl_clipboard_utils.hpp
 	./sdl_clipboard_utils.cpp
 	./file_selector.hpp