Move alias supporting code to locator. #435

Job	Run time
build (stellar-cli, stellar, ubuntu-20.04, x86_64-unknown-linux-gnu)	13m 42s
build (stellar-cli, stellar, ubuntu-20.04, aarch64-unknown-linux-gnu)	15m 40s
build (stellar-cli, stellar, macos-14, x86_64-apple-darwin)	9m 2s
build (stellar-cli, stellar, macos-12, aarch64-apple-darwin)	16m 51s
build (stellar-cli, stellar, windows-latest, x86_64-pc-windows-msvc, .exe)	21m 5s
build (soroban-cli, soroban, ubuntu-20.04, x86_64-unknown-linux-gnu)	13m 43s
build (soroban-cli, soroban, ubuntu-20.04, aarch64-unknown-linux-gnu)	15m 40s
build (soroban-cli, soroban, macos-14, x86_64-apple-darwin)	8m 44s
build (soroban-cli, soroban, macos-12, aarch64-apple-darwin)	19m 16s
build (soroban-cli, soroban, windows-latest, x86_64-pc-windows-msvc, .exe)	22m 9s
	2h 35m 52s

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