v1.16: kafka: rename to tools (backport of #203)

[mergify]

This is an automatic backport of pull request #203 done by Mergify.
Cherry-pick of f5f0c3c has failed:

On branch mergify/bp/v1.16/pr-203
Your branch is up to date with 'origin/v1.16'.

You are currently cherry-picking commit f5f0c3c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   .github/workflows/test.yml
	modified:   README.md
	deleted:    yellowstone-grpc-kafka/Cargo.toml
	deleted:    yellowstone-grpc-kafka/src/prom.rs
	renamed:    yellowstone-grpc-kafka/build.rs -> yellowstone-grpc-tools/build.rs
	renamed:    yellowstone-grpc-kafka/config.json -> yellowstone-grpc-tools/config-kafka.json
	renamed:    yellowstone-grpc-kafka/docker-kafka.yml -> yellowstone-grpc-tools/docker-kafka.yml
	renamed:    yellowstone-grpc-kafka/src/bin/grpc-kafka.rs -> yellowstone-grpc-tools/src/bin/grpc-kafka.rs
	renamed:    yellowstone-grpc-kafka/src/config.rs -> yellowstone-grpc-tools/src/kafka/config.rs
	renamed:    yellowstone-grpc-kafka/src/dedup.rs -> yellowstone-grpc-tools/src/kafka/dedup.rs
	renamed:    yellowstone-grpc-kafka/src/grpc.rs -> yellowstone-grpc-tools/src/kafka/grpc.rs
	new file:   yellowstone-grpc-tools/src/kafka/mod.rs
	new file:   yellowstone-grpc-tools/src/kafka/prom.rs
	renamed:    yellowstone-grpc-kafka/src/lib.rs -> yellowstone-grpc-tools/src/lib.rs
	new file:   yellowstone-grpc-tools/src/prom.rs
	renamed:    yellowstone-grpc-kafka/src/version.rs -> yellowstone-grpc-tools/src/version.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   .github/workflows/release.yml
	both modified:   CHANGELOG.md
	both modified:   Cargo.lock
	both modified:   Cargo.toml
	both modified:   yellowstone-grpc-tools/Cargo.toml

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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