feat: add support for RadioMaster TX16S MK3 (#7017)

Co-authored-by: philmoz <phil.a.mitchell@gmail.com>
Co-authored-by: 3djc <3djc@gh.com>
Co-authored-by: Peter Feerick <5500713+pfeerick@users.noreply.github.com>

.github/workflows/build_fw.yml

@@ -33,6 +33,7 @@ jobs:
           - x9dp2019
           - tx15
           - tx16s
+          - tx16smk3
           - nv14
           - el18
           - pl18
@@ -95,6 +96,7 @@ jobs:
           - tx12mk2;boxer;gx12
           - tx15
           - tx16s
+          - tx16smk3
           - f16
           - v12;v14;v16
           - x10;x10express

.github/workflows/nightly.yml

@@ -26,6 +26,7 @@ jobs:
           - t20;t20v2;t14
           - tx12mk2;boxer;gx12
           - tx16s
+          - tx16smk3
           - f16
           - v16
           - x10;x10express