Refactor setup scripts

[Larry Joy (ljoy913)]

Refactor setup scripts to increase overall setup time:

• Created top-level workspace for Rust projects. All Rust sub-projects can be built at once with shared resources.
• Increase error handling to better show failures lost in console output
• Run scripts in parallel to take advantage of multi-core machines
• Add CRESCENT_ENV var to set consistent debug/release flags when building everything
• Replaced deprecated python_jwt pip package
• Replaced pyMDOC-CBOR pip package with cbor2 (we were only actually using the cbor2 dependency out of the pyMDOC-CBOR package)
• Add project level .gitignore files instead of a top-level only file
• Refactor ./circuit_setup/scripts/run_setup.sh
  • do incremental setup based on changes to key files instead of rerunning most of the setup every time.
  • break setup steps into discrete functions instead of a monolithic script
• You can now call setup scripts from most any location without having to cd to a specific directory first

./build_all.sh went from 16.4 minutes to 8 minutes on my fastest machine and from 46 minutes to 25.5 on my laptop.