feat(bin-leading-dir): add 'bin-leading-dir' option #1451

Job	Run time
test (ubuntu-latest)	6s
test (ubuntu-latest, aarch64-unknown-linux-gnu)	1m 1s
leading_dir_test (ubuntu-latest, false)	8s
test (ubuntu-latest, aarch64-unknown-linux-gnu, cargo)	26s
leading_dir_test (ubuntu-latest, aarch64-unknown-linux-gnu, opt/bin/leading, true)	1m 1s
test (ubuntu-latest, x86_64-unknown-linux-gnu.2.17, cargo-zigbuild)	32s
leading_dir_test (ubuntu-latest, aarch64-unknown-linux-gnu, cargo, opt)	26s
test (macos-latest)	11s
test (macos-13)	11s
leading_dir_test (ubuntu-latest, x86_64-unknown-linux-gnu.2.17, cargo-zigbuild, true)	16s
test (macos-14)	8s
leading_dir_test (macos-latest)	13s
tidy / tidy	38s
test (macos-latest, x86_64-apple-darwin)	12s
leading_dir_test (macos-13, opt/leading-dir, true)	11s
test (macos-latest, aarch64-apple-darwin)	13s
leading_dir_test (macos-14, leading-dir)	13s
test (macos-latest, universal-apple-darwin)	17s
leading_dir_test (macos-latest, x86_64-apple-darwin, true)	12s
leading_dir_test (macos-latest, aarch64-apple-darwin, false)	21s
test (macos-latest, universal-apple-darwin, cargo)	17s
test (windows-latest)	47s
leading_dir_test (macos-latest, universal-apple-darwin)	20s
test (windows-latest, aarch64-pc-windows-msvc)	50s
leading_dir_test (macos-latest, universal-apple-darwin, cargo)	23s
leading_dir_test (windows-latest, opt/leading-dir/bin, true)	1m 8s
leading_dir_test (windows-latest, aarch64-pc-windows-msvc, opt)	1m 7s
	11m 48s

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