Remove lazy loading of registry

This removes the need for interior mutability and makes the Project
Send + Sync.

Change-Id: I4fe3004f33e0d3502e4ea99a974603605183acdf
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/qg/+/126423
Reviewed-by: Alexei Frolov <frolv@google.com>
Commit-Queue: Erik Gilling <konkers@google.com>
4 files changed
tree: 8cfe93af3036d3713505fee2481820e80a162325
  1. examples/
  2. qg/
  3. qg-cli/
  4. tools/
  5. .gitignore
  6. Cargo.toml
  7. rustfmt.toml