feat(lua): API for overriding speaker volume #8020

Job	Run time
Run tests (x9dp2019)	3m 13s
Run tests (tx16s)	6m 58s
Run tests (nv14)	7m 11s
Run tests (el18)	6m 31s
Run tests (t12)	3m 56s
Run tests (t16)	8m 53s
Run tests (t18)	6m 53s
Run tests (t8)	4m 8s
Run tests (tlite)	3m 11s
Run tests (t20)	3m 17s
Run tests (tx12)	3m 29s
Run tests (x10)	6m 48s
Run tests (x12s)	9m 9s
Run tests (x7)	3m 7s
Run tests (x9d)	3m 6s
Run tests (x9dp)	3m 34s
Run tests (x9e)	3m 27s
Run tests (x9lite)	3m 18s
Run tests (x9lites)	3m 16s
Run tests (xlite)	4m 9s
Run tests (xlites)	3m 9s
Run builds (nv14;el18)	7m 25s
Run builds (t12)	2m 24s
Run builds (t16)	5m 14s
Run builds (t18)	5m 29s
Run builds (t8;zorro;pocket;commando8)	5m 9s
Run builds (tlite;tpro;tprov2;lr3pro)	5m 1s
Run builds (t20)	2m 4s
Run builds (tx12;tx12mk2;boxer)	4m 2s
Run builds (tx16s)	4m 11s
Run builds (x10;x10-access)	7m 34s
Run builds (x12s)	4m 34s
Run builds (x7;x7-access)	3m 10s
Run builds (x9d;x9dp;x9dp2019)	4m 55s
Run builds (x9e;x9e-hall)	3m 57s
Run builds (x9lite;x9lites)	3m 5s
Run builds (xlite;xlites)	3m 13s
	2h 52m 10s

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