feat(radio): discover SBUS trainer availability #8244

Job	Run time
Run tests (x9dp2019)	3m 22s
Run tests (tx16s)	8m 16s
Run tests (nv14)	6m 50s
Run tests (el18)	8m 17s
Run tests (t12)	3m 25s
Run tests (t16)	8m 4s
Run tests (t18)	8m 18s
Run tests (t8)	3m 23s
Run tests (tlite)	3m 40s
Run tests (t20)	3m 32s
Run tests (tx12)	3m 44s
Run tests (x10)	8m 18s
Run tests (x12s)	8m 11s
Run tests (x7)	3m 21s
Run tests (x9d)	3m 16s
Run tests (x9dp)	3m 17s
Run tests (x9e)	4m 6s
Run tests (x9lite)	3m 21s
Run tests (x9lites)	3m 22s
Run tests (xlite)	3m 27s
Run tests (xlites)	4m 0s
Run builds (nv14;el18)	7m 5s
Run builds (t12)	2m 1s
Run builds (t16)	4m 11s
Run builds (t18)	4m 8s
Run builds (t8;zorro;pocket;commando8)	5m 4s
Run builds (tlite;tpro;tprov2;lr3pro)	6m 45s
Run builds (t20)	2m 13s
Run builds (tx12;tx12mk2;boxer)	4m 40s
Run builds (tx16s)	4m 57s
Run builds (x10;x10-access)	7m 27s
Run builds (x12s)	4m 28s
Run builds (x7;x7-access)	3m 4s
Run builds (x9d;x9dp;x9dp2019)	4m 26s
Run builds (x9e;x9e-hall)	3m 5s
Run builds (x9lite;x9lites)	3m 45s
Run builds (xlite;xlites)	2m 59s
	2h 55m 48s

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