uri: add uri_parse() - new function extracts components from an URI

uri.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+bool uri_parse(const char *uri, size_t len,
+               char **scheme, char **user, char **password, char **host,
+               uint16_t *port, char **path, char **query, char **fragment);
+
+bool hostname_is_localhost(const char *hostname);