doc: include license for src/large_pages in LICENSE

Include License for src/large_pages (MIT licensed by Intel), to the main
LICENSE file and make required changes to the tools/license-builder.sh
script.

Fixes: https://github.com/nodejs/node/issues/25238

PR-URL: https://github.com/nodejs/node/pull/25246


Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>