Compile a Project via the LSP

[rvcas]

We need to be able to run check on a project through the LSP.

This will involve:

• loading the config aiken.toml
• watching the config file for changes
• creating a Project instance
• running check on start
  • we should also register a progress token with the client
• any time a file is saved we should rerun check
• any time aiken.toml changes we need to tear everything down and start a fresh Project instances