ci: Release to crates.io

[langston-barrett]

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[langston-barrett]

I had a hard time figuring this out - I kept getting

   Packaging treeedbgen-souffle v0.1.0-rc.4 (/home/runner/work/treeedb/treeedb/treeedbgen-souffle)
   Verifying treeedbgen-souffle v0.1.0-rc.4 (/home/runner/work/treeedb/treeedb/treeedbgen-souffle)
error: failed to verify package tarball

Caused by:
  no matching package named `treeedbgen` found
  location searched: registry `crates-io`
  required by package `treeedbgen-souffle v0.1.0-rc.4 (/home/runner/work/treeedb/treeedb/target/package/treeedbgen-souffle-0.1.0-rc.4)`
Error: Process completed with exit code 101.

even though treeedbgen had just been uploaded. I think I just need to wait longer in between pushing different crates that depend on one another?

Also, I kept hitting the rate limit (see #24).