feat: add concurrent working threads option to CLI args #54

Job	Run time
clippy-checks	58s
rustfmt-nightly-check	11s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-unknown-linux-gnu)	35s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-pc-windows-gnu)	1m 30s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-pc-windows-msvc)	1m 52s
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)	1m 37s
build-and-test / build-artifacts-and-run-tests (false, false, false, x86_64-unknown-linux-musl)	1m 5s
build-and-test / build-artifacts-and-run-tests (false, false, false, aarch64-unknown-linux-gnu)	3m 27s
build-and-test / build-artifacts-and-run-tests (false, false, false, aarch64-unknown-linux-musl)	2m 58s
build-and-test / build-artifacts-and-run-tests (false, false, false, armv7-unknown-linux-gnueabihf)	3m 40s
build-and-test / build-artifacts-and-run-tests (false, false, false, armv7-unknown-linux-musleabihf)	3m 1s
build-and-test / build-artifacts-and-run-tests (true, x86_64-unknown-linux-gnu)	1m 52s
build-and-test / build-artifacts-and-run-tests (true, x86_64-unknown-linux-gnu)	1m 33s
build-and-test / build-artifacts-and-run-tests (true, x86_64-unknown-linux-gnu)	1m 28s
	26m 32s

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