Updated directory structure and build steps

* seperate build-supplemental from build-version
* version.cpp now included in cmake config, not directly imported
* socket moved into its own directory
* test_www removed from project

src/http/response.cpp

@@ -1,5 +1,5 @@
 #include "response.hpp"
-#include "../build_supp/version.cpp"
+#include "../version.hpp"
 
 namespace anthracite::http {