Add `showSyntaxErrors` server setting

[dhruvmanila]

Summary

This PR adds a new showSyntaxErrors server setting for https://github.com/astral-sh/ruff/pull/12059 in ruff-lsp.

Test Plan

VS Code

Requires: https://github.com/astral-sh/ruff-vscode/pull/504

Verified that the VS Code extension is using the bundled ruff-lsp and the debug build of ruff:

2024-06-27 08:47:49.567 [info] Server run command: /Users/dhruv/work/astral/ruff-vscode/.venv/bin/python /Users/dhruv/work/astral/ruff-vscode/bundled/tool/server.py
2024-06-27 08:47:49.820 [info] Using 'path' setting: /Users/dhruv/work/astral/ruff/target/debug/ruff
2024-06-27 08:47:49.827 [info] Inferred version 0.4.10 for: /Users/dhruv/work/astral/ruff/target/debug/ruff
2024-06-27 08:47:49.828 [info] Found ruff 0.4.10 at /Users/dhruv/work/astral/ruff/target/debug/ruff

Using the following VS Code config:

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

First, set ruff.showSyntaxErrors to true:

And then set it to false:

Neovim

Using the following Ruff server config:

require('lspconfig').ruff_lsp.setup {
  cmd = { '/Users/dhruv/work/astral/ruff-lsp/.venv/bin/ruff-lsp' },
  init_options = {
    settings = {
      path = { '/Users/dhruv/work/astral/ruff/target/debug/ruff' },
      showSyntaxErrors = true,
    },
  },
}

First, set showSyntaxErrors to true:

And then set it to false: