HIL

Mark unstable modules, make `macros` private #4322

Job	Run time
Build xtasks \| armv7	1m 43s
Build xtasks \| aarch64	1m 47s
Build HIL Tests \| esp32c2	1m 48s
Build HIL Tests \| esp32c3	2m 2s
Build HIL Tests \| esp32c6	2m 16s
Build HIL Tests \| esp32h2	2m 14s
Build HIL Tests \| esp32	4m 11s
Build HIL Tests \| esp32s2	4m 53s
Build HIL Tests \| esp32s3	4m 57s
Run HIL Tests \| ${{ matrix.target.soc }}	0s
	25m 51s

Provide feedback