[RN][CI] Factor out build hermesc apple

[cipolleschi]

Summary:

Refactor the Build HermesC apple job so to use the same code in all the jobs

Changelog:

[Internal] - CI refactoring for build hermesc apple

Test Plan:

GHA must be green

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	20,443,805	-840,334
android	hermes	armeabi-v7a	n/a	--
android	hermes	x86	n/a	--
android	hermes	x86_64	n/a	--
android	jsc	arm64-v8a	23,642,493	-838,672
android	jsc	armeabi-v7a	n/a	--
android	jsc	x86	n/a	--
android	jsc	x86_64	n/a	--

Base commit: 12b64b78247f2db929c6d421262bdec1f6402e0b Branch: main