doc: mention N-API as recommended approach

We've had a few comments that from the doc it might not
be clear that N-API is the recommended approach for Addons.
As a start, mention N-API early in the non N-API section
as the recommended approach unless lower level access
is required.

PR-URL: #28922
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: mhdawson

doc/api/addons.md

@@ -8,7 +8,13 @@ can be loaded into Node.js using the [`require()`][require] function, and used
 just as if they were an ordinary Node.js module. They are used primarily to
 provide an interface between JavaScript running in Node.js and C/C++ libraries.
 
-At the moment, the method for implementing Addons is rather complicated,
+There are three options for implementing Addons: N-API, nan, or direct
+use of internal V8, libuv and Node.js libraries. Unless you need direct
+access to functionality which is not exposed by N-API, use N-API.
+Refer to the section [C/C++ Addons - N-API](n-api.html)
+for more information on N-API.
+
+When not using N-API, implementing Addons is complicated,
 involving knowledge of several components and APIs:
 
  - V8: the C++ library Node.js currently uses to provide the