feat: Support for Flysky ST16 (#6071)

Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>
Co-authored-by: Peter Feerick <peter.feerick@gmail.com>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>
Co-authored-by: Malte Langermann <malte@langermann.net>

.github/workflows/nightly.yml

@@ -36,6 +36,7 @@ jobs:
           - xlite;xlites
           - mt12
           - nb4p
+          - st16
     container:
       image: ghcr.io/edgetx/edgetx-dev:latest
       volumes: