Add language objc (#38) #98

Job	Run time
NIF 2.15 - aarch64-apple-darwin (macos-11 \| default)	5m 17s
NIF 2.15 - aarch64-unknown-linux-gnu (ubuntu-20.04 \| default)	3m 15s
NIF 2.15 - aarch64-unknown-linux-musl (ubuntu-20.04 \| default)	3m 16s
NIF 2.15 - x86_64-apple-darwin (macos-11 \| default)	7m 17s
NIF 2.15 - x86_64-pc-windows-gnu (windows-2022 \| default)	4m 41s
NIF 2.15 - x86_64-pc-windows-gnu (windows-2022 \| legacy_cpu)	5m 7s
NIF 2.15 - x86_64-pc-windows-msvc (windows-2019 \| default)	5m 31s
NIF 2.15 - x86_64-pc-windows-msvc (windows-2019 \| legacy_cpu)	5m 37s
NIF 2.15 - x86_64-unknown-freebsd (ubuntu-22.04 \| default)	3m 20s
NIF 2.15 - x86_64-unknown-freebsd (ubuntu-22.04 \| legacy_cpu)	3m 19s
NIF 2.15 - x86_64-unknown-linux-gnu (ubuntu-20.04 \| default)	2m 13s
NIF 2.15 - x86_64-unknown-linux-gnu (ubuntu-20.04 \| legacy_cpu)	2m 2s
NIF 2.15 - x86_64-unknown-linux-musl (ubuntu-20.04 \| default)	3m 17s
	54m 12s

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