Refactor/deployment scripts

[chrismclarke]

PR Checklist

• PR title descriptive (can be used in release notes)

TODO

• Separate PR to get deployment from workflow runner (not deployment model)
• ...

Description

Start process of refactoring deployment management. Main goals

• Add tests for all deployment functionality
• Simplify process of loading/caching deployments
• Allow deployments to be loaded from JS environment
• Remove synchronous deployment get methods (cannot run child subprocess)
• Consider moving all deployment code to own workspace
• Ensure all tests passing from yarn workspace scripts test:watch

Git Issues

Closes #

Screenshots/Videos

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