fix(windows): include local native modules in final asar (#1616)
fix(windows): include local native modules in final asar (#1616)

Etcher has local native code that gets built to `build/`, but that's not
being included inside the final asar.

The fix is to manually add the `*.node` files inside `build/Release` by
adding the appropriate wilcard to the `files` section of
`electron-builder.yml`.

Signed-off-by: Juan Cruz Viotti <ee759b1936af4d7bd0d0e5363e6b1ea438e6a390@jviotti.com>
resin-io/resin-etcher,resin-io/resin-etcher,resin-io/herostratus,resin-io/etcher,resin-io/etcher,resin-io/herostratus,resin-io/etcher,resin-io/etcher,resin-io/etcher