Mark as deprecated

[hakonlo]

This project appears to be dead, with an official successor in bazel-deps (see this comment). Users are, however, sent here by the official Bazel documentation. This wastes everybody's time, and erodes trust in the bazel ecosystem.

This PR marks the repository as deprecated, and redirects visitors to the bazel-deps repo.

If this project is still maintained, and the comment referenced above is wrong, then please disregard this PR.

[googlebot]

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[hakonlo]

I signed it!

[googlebot]

We found a Contributor License Agreement for you (the sender of this pull request), but were unable to find agreements for all the commit author(s) or Co-authors. If you authored these, maybe you used a different email address in the git commits than was used to sign the CLA (login here to double check)? If these were authored by someone else, then they will need to sign a CLA as well, and confirm that they're okay with these being contributed to Google. In order to pass this check, please resolve this problem and have the pull request author add another comment and the bot will run again. If the bot doesn't comment, it means it doesn't think anything has changed.

[googlebot]

CLAs look good, thanks!