httpd_config::uri_match_fn field

URI matcher function. Called when searching for a matching URI: 1) whose request handler is to be executed right after an HTTP request is successfully parsed 2) in order to prevent duplication while registering a new URI handler using `httpd_register_uri_handler()` Available options are: 1) NULL : Internally do basic matching using `strncmp()` 2) `httpd_uri_match_wildcard()` : URI wildcard matcher Users can implement their own matching functions (See description of the `httpd_uri_match_func_t` function prototype)