module: add inspector to builtinLibs

PR-URL: https://github.com/nodejs/node/pull/15643
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/internal/module.js

@@ -83,6 +83,11 @@ const builtinLibs = [
   'stream', 'string_decoder', 'tls', 'tty', 'url', 'util', 'v8', 'vm', 'zlib'
 ];
 
+if (typeof process.binding('inspector').connect === 'function') {
+  builtinLibs.push('inspector');
+  builtinLibs.sort();
+}
+
 function addBuiltinLibsToObject(object) {
   // Make built-in modules available directly (loaded lazily).
   builtinLibs.forEach((name) => {