move all vlib modules to vlib/

vlib/http/download_win.v

@@ -0,0 +1,22 @@
+// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+module http
+
+fn download_file_with_progress(url, out string, cb, cb_finished voidptr) {
+}
+
+fn download_file(url, out string) {
+	# HRESULT res = URLDownloadToFile(NULL, url.str, out.str, 0, NULL);
+	# if(res == S_OK) {
+	println('Download Ok')
+	# } else if(res == E_OUTOFMEMORY) {
+	println('Buffer length invalid, or insufficient memory')
+	# } else if(res == INET_E_DOWNLOAD_FAILURE) {
+	println('URL is invalid')
+	# } else {
+	# printf("Download error: %d\n", res);
+	# }
+}
+