Source map has been standardized as ECMA426, with a developing test
suite. Add an initial coverage of the source map tests.
PR-URL: https://github.com/nodejs/node/pull/56436
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
