Add libraries maintained by dfed

[dfed]

I put a few in here – let me know if you'd prefer for me to split these out into their own PRs.

• Project Name: SafeDI -- Valet -- AsyncQueue -- CacheAdvance
• Project URL: https://github.com/dfed/safedi -- https://github.com/square/Valet -- https://github.com/dfed/swift-async-queue -- https://github.com/dfed/CacheAdvance
• Project Description: Compile-time safe dependency injection. -- Valet lets you securely store data in the Keychain without knowing a thing about how the Keychain works. It’s easy. We promise. -- A library of queues that enable sending ordered tasks from synchronous to asynchronous contexts. -- A performant cache for logging systems. CacheAdvance persists log events 30x faster than SQLite.
• Why it should be added to awesome-swift:
• At least 15 stars (GitHub project)
• Support Swift 5
• Updated contents.json instead of README
• Lib is fully open sourced, written in Swift and not a wrapper over compiled lib
• Description does not say "written in Swift" or variant 🤓

While I was here I updated redirected URLs to get CI passing.

[dfed]

the surrounding libraries had tags, so I also added tags. Happy to remove.

[dfed]

You can see the CI failure that led to these updated links here: https://github.com/matteocrippa/awesome-swift/pull/1846/checks?check_run_id=31793504943

[matteocrippa]

thanks

[matteocrippa]

@dfed thanks for the PR, happy to discover a few new interesting libs! thanks! 👍🏻