feat: add concurrent working threads option to CLI args #51

Job	Run time
clippy-checks	57s
rustfmt-nightly-check	11s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-unknown-linux-gnu)	1m 35s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-pc-windows-gnu)	4m 29s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-pc-windows-msvc)	3m 29s
build-and-test / build-artifacts-and-run-tests (false, false, false, aarch64-pc-windows-msvc)	45s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-apple-darwin)	2m 10s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-unknown-linux-musl)	2m 14s
build-and-test / build-artifacts-and-run-tests (false, false, false, aarch64-unknown-linux-gnu)	4m 38s
build-and-test / build-artifacts-and-run-tests (false, false, false, aarch64-unknown-linux-musl)	4m 9s
build-and-test / build-artifacts-and-run-tests (false, false, false, armv7-unknown-linux-gnueabihf)	4m 51s
build-and-test / build-artifacts-and-run-tests (false, false, false, armv7-unknown-linux-musleabihf)	4m 17s
build-and-test / build-artifacts-and-run-tests (true, x86_64-unknown-linux-gnu)	1m 53s
build-and-test / build-artifacts-and-run-tests (true, x86_64-unknown-linux-gnu)	1m 34s
build-and-test / build-artifacts-and-run-tests (true, x86_64-unknown-linux-gnu)	1m 31s
	38m 43s

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