meta: add gyp as owner of gyp files and tools/gyp

Co-authored-by: Jiawen Geng <technicalcute@gmail.com>

PR-URL: #34847
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Ujjwal Sharma <ryzokuken@disroot.org>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: mmarchini

.github/CODEOWNERS

@@ -96,6 +96,12 @@
 /doc/guides/adding-new-napi-api.md @nodejs/n-api
 /doc/api/n-api.md @nodejs/n-api
 
+# gyp
+
+*.gyp @nodejs/gyp
+*.gypi @nodejs/gyp
+/tools/gyp/**/* @nodejs/gyp
+
 # WASI
 /deps/uvwasi/ @nodejs/wasi
 /doc/api/wasi.md @nodejs/wasi