Removed "rescript legacy" subcommand in favor of separate "rescript-legacy" binary #8635

Job	Run time
build-compiler (ubuntu-24.04-arm, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, t...	27s
build-compiler (ubuntu-24.04, ocaml-variants.4.14.2+options,ocaml-option-static, linux-x64, x86_6...	27s
build-compiler (macos-14, 5.3.0, true, darwin-arm64, aarch64-apple-darwin)	26s
build-compiler (ubuntu-24.04, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, linux...	18s
build-compiler (windows-2022, 5.3.0, true, win32-x64, x86_64-pc-windows-gnu)	48s
build-compiler (macos-13, 5.3.0, true, darwin-x64, x86_64-apple-darwin)	40s
api-docs	0s
pkg-pr-new	0s
test-installation-pnpm	-1s
test-integration-rewatch	-1s
test-installation-npm	-1s
publish	0s
	3m 3s

Provide feedback