deps: add ngtcp2 and nghttp3

Signed-off-by: James M Snell <jasnell@gmail.com>

PR-URL: #32379
Reviewed-By: Anna Henningsen <anna@addaleax.net>

deps/nghttp3/COPYING

@@ -0,0 +1,22 @@
+The MIT License
+
+Copyright (c) 2019 nghttp3 contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

deps/nghttp3/lib/includes/config.h

@@ -0,0 +1,39 @@
+
+/* Edited to match src/node.h. */
+#include <stdint.h>
+
+#ifdef _WIN32
+#if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED)
+typedef intptr_t ssize_t;
+# define _SSIZE_T_
+# define _SSIZE_T_DEFINED
+#endif
+#else  // !_WIN32
+# include <sys/types.h>  // size_t, ssize_t
+#endif  // _WIN32
+
+#ifdef _MSC_VER
+#  include <intrin.h>
+#  define __builtin_popcount __popcnt
+#endif
+
+/* Define to 1 to enable debug output. */
+/* #undef DEBUGBUILD */
+
+/* Define to 1 if you have the <arpa/inet.h> header file. */
+/* #undef HAVE_ARPA_INET_H */
+
+/* Define to 1 if you have the <stddef.h> header file. */
+#define HAVE_STDDEF_H 1
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+/* #undef HAVE_UNISTD_H */