Implement `--emit-index-annotation` to annotate source index for each package #4732

Job	Run time
cargo test \| ubuntu	5m 35s
cargo test \| windows	8m 4s
build binary \| linux	2m 51s
build binary \| macos aarch64	3m 20s
cargo test \| macos	6m 49s
build binary \| macos x86_64	4m 6s
cargo clippy (ubuntu-latest)	52s
cargo fmt	28s
cargo clippy (windows-latest)	4m 11s
build binary \| windows	3m 15s
check windows trampoline	2m 52s
check cache \| ubuntu	46s
check system \| alpine	27s
ecosystem test \| prefect	2m 7s
check system \| python on fedora	32s
check system \| python on debian	42s
check system \| python via pyenv	1m 38s
check system \| pypy on ubuntu	25s
check system \| pyston	3m 50s
check system \| python on ubuntu	17s
check system \| amazonlinux	24s
check system \| python on centos	0s
check system \| python3.10 on windows	29s
check system \| python3.10 on windows x86	47s
check system \| python3.12 via chocolatey	1m 6s
check system \| python3.13 on windows	1m 30s
check system \| python on macos aarch64	11s
check cache \| macos aarch64	9s
check system \| conda3.8 on linux	32s
check system \| conda3.11 on linux	44s
check system \| homebrew python on macos aarch64	14s
check system \| conda3.8 on windows	1m 50s
check system \| conda3.11 on windows	1m 50s
check system \| conda3.8 on macos	37s
check system \| conda3.11 on macos	40s
check system \| python on macos x86_64	50s
	1h 5m 0s

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