feat: Radiomaster TX15 support (#6484)

Co-authored-by: Malte Langermann <54738901+gagarinlg@users.noreply.github.com>
Co-authored-by: 3djc <3djc@gh.com>
Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>
Co-authored-by: Peter Feerick <peter.feerick@gmail.com>

.github/workflows/actions.yml

@@ -43,6 +43,7 @@ jobs:
       matrix:
         target:
           - x9dp2019
+          - tx15
           - tx16s
           - nv14
           - el18
@@ -99,6 +100,7 @@ jobs:
           - tprov2;tpros;bumblebee
           - t20;t20v2;t14
           - tx12mk2;boxer;gx12
+          - tx15
           - tx16s
           - f16
           - v12;v14;v16

.github/workflows/nightly.yml

@@ -36,6 +36,7 @@ jobs:
           - mt12
           - nb4p
           - st16
+          - tx15
     container:
       image: ghcr.io/edgetx/edgetx-dev:latest
       volumes: