Libraries: Create top level directory for libraries.

Things were getting a little crowded in the project root, so this patch
moves the Lib*/ directories into Libraries/.

Libraries/LibCore/CUserInfo.cpp

@@ -0,0 +1,17 @@
+#include "CUserInfo.h"
+#include <pwd.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+const char* get_current_user_home_path()
+{
+    if (auto* home_env = getenv("HOME"))
+        return home_env;
+
+    auto d = "/";
+    uid_t uid = getuid();
+    if (auto* pwd = getpwuid(uid))
+        return pwd->pw_dir;
+
+    return d;
+}