feat(auctioneer): add auctioneer binary

[itamarreif]

Summary

This PR adds the Auctioneer crate and boilerplate for a new binary.

Background

The new binary will be used for the auctioneer service. See the Auctioneer master issue for more context.

Changes

• Add auctioneer crate to workspace's Cargo.toml file
• Metrics, build info, config and boilerplate for setting up the binary
  • The metrics object is currently empty but I kept it in because it will be used in followup prs
• Publicly exposed auctioneer::Auctioneer handle for managing spawn and shutdown due to SIGTERM
• Internal service implementation in auctioneer::Inner sets up the main object responsible for intiialization, running, and graceful shutdown
• Boilerplate for a single subtask that will be implemented a subsequent pr.

Related Issues

closes #1534, #1535, #1536, #1538, #1539, #1790