Add support for untrusted workspace

[dhruvmanila]

Summary

This PR adds support for untrusted workspaces.

This wasn't possible with ruff-lsp because it always required a Python interpreter to run but we can support it with the native server.

resolves: #510

Preview

Restricted configuration view:

Switching from an untrusted workspace to a trusted one:

Config:

{
  "ruff.nativeServer": "auto",
  "ruff.path": ["/Users/dhruv/work/astral/ruff/target/debug/ruff"]
}

Here, the ruff.path configuration isn't considered. But, as soon as we trust the workspace, the server is restarted using the ruff.path setting as seen in the logs.

Screen.Recording.2024-07-11.at.17.43.24.mov

Test Plan

Explicitly using native server:

{
	"ruff.nativeServer": "on"
}

Logs:

2024-07-11 17:37:18.167 [info] Workspace is not trusted, using bundled executable: /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff
2024-07-11 17:37:18.167 [info] Found Ruff 0.5.0 at /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff
2024-07-11 17:37:18.167 [info] Server run command: /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff server --preview

Explicitly using ruff-lsp:

{
	"ruff.nativeServer": "off"
}

2024-07-11 17:41:31.432 [warning] Cannot use the legacy server (ruff-lsp) in an untrusted workspace; switching to the native server using the bundled executable.
2024-07-11 17:41:31.432 [info] Workspace is not trusted, using bundled executable: /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff
2024-07-11 17:41:31.451 [info] Found Ruff 0.5.0 at /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff
2024-07-11 17:41:31.452 [info] Server run command: /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff server --preview

Notification preview:

Using auto behavior:

{
	"ruff.nativeServer": "auto"
}

Logs:

2024-07-11 17:41:57.784 [info] Resolved 'ruff.nativeServer: auto' to use the native server in an untrusted workspace
2024-07-11 17:41:57.784 [info] Workspace is not trusted, using bundled executable: /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff
2024-07-11 17:41:57.794 [info] Found Ruff 0.5.0 at /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff
2024-07-11 17:41:57.795 [info] Server run command: /Users/dhruv/work/astral/ruff-vscode/bundled/libs/bin/ruff server --preview

[MichaReiser]

Nice!