httpServer example program for WIZwiki-W7500 Only LED control

Dependents:   httpServer-WIZwiki-W7500

This library is for HTTP server.

Refer to Example program(https://developer.mbed.org/teams/WIZnet/code/httpServer-WIZwiki-W7500/)

HTTPServer.cpp/shortlog@772534e3b627: not found in manifest