Project: Release Minimal CLI + Editor

[StachuDotNet]

We've been working on a lot over the past year, but haven't done a great job of releasing it to our users.

This Issue captures work towards a short-term checkpoint, where users can minimally

• install a self-updating darklang CLI exe
• write a .dark script, and run it via the darklang exe
  • packages are provided via the live web-based package manager
• access and use our VS Code extension which wraps our LSP-based Language Server
• have a reasonable, if bare-bones, experience writing such a script

See companion issue #5265 for how this fits into our current goals.

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We set these goals around a month ago in Notion, and here I'm attempting to represent them in a GitHub Issue instead

• installation and self-update of the CLI // ocean
  • deal with MacOS code signing
  • make execution/installation work on Windows
• parsing and pretty-printing
  • otherwise, we won't be able to use it in the cli-hosted LSP server
  • grammar to match more of our full language
• editor
  • Update “Completions” request to return function names where relevant
    • get context of what node you're on (could this be a function name?)
    • extract the full word in focus (e.g. List.a)
    • provide function that takes "List.a" and suggests "List.append" along with other things (it might be possible for this to just return a list of all fns, and have the client filter it down appropriately)
    • return relevant completions
  • tidy marketplace page
  • more completions -- type name, fn name, const name, genAI
  • better initialize handling (respect the incoming request)
  • handle onHover
  • view package sources