doc: new team for bundlers or delivery of Node.js

Add team that we can use to cc organizations or people
who do one of the following:

* bundle node into their product
* bundle node into their distributions
* provide an installer
* provide a version manager

PR-URL: #19098
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

doc/onboarding-extras.md

@@ -41,6 +41,7 @@
 | upgrading libuv                          | @saghul                                                               |
 | upgrading npm                            | @fishrock123, @MylesBorins                                            |
 | upgrading V8                             | @nodejs/v8, @nodejs/post-mortem                                       |
+| Embedded use or delivery of Node.js      | @nodejs/delivery-channels                                             |
 
 When things need extra attention, are controversial, or `semver-major`:
 @nodejs/tsc