feat: migrate to vim.lsp.config #3659

Problem:
Nvim 0.11 has vim.lsp.config, which mostly replaces the legacy
nvim-lspconfig "framework".

Solution:
Migrate all configs to `lsp/*` variants. The old configs in
`lua/lspconfig/` are "frozen".

The new configs include these changes:
- `commands` field became raw calls to
  `vim.api.nvim_buf_create_user_command` inside `on_attach`.
- `root_dir` became:
  - `root_markers` whenever the file list was simple didn't need to mach `*`
  - if the logic was complicated, or needed to match something like
    '\*.c', it was defined as a vim.lsp.Config `root_dir` callback.
- `on_config_change` became `before_init`. I don't actually know if this
  is the correct approach, but looking around the documentation of
  `nvim-lspconfig` a saw that it was defined as the function that gets
  called as soon as the config have `root_dir`, and so I thought
  `before_init` might be the closest alternative.
- `docs.description` became a luadoc `@brief` docstring.
- `single_file_support = false`?

Co-authored-by: Aliou Diallo <aliou@users.noreply.github.com>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/lsp/vacuum.lua b/lsp/vacuum.lua
new file mode 100644
index 00000000..2f96334e
--- /dev/null
+++ b/lsp/vacuum.lua
@@ -0,0 +1,21 @@
+---@brief
+---
+---Vacuum is the worlds fastest OpenAPI 3, OpenAPI 2 / Swagger linter and quality analysis tool.
+--
+-- You can install vacuum using mason or follow the instructions here: https://github.com/daveshanley/vacuum
+--
+-- The file types are not detected automatically, you can register them manually (see below) or override the filetypes:
+--
+-- ```lua
+-- vim.filetype.add {
+--   pattern = {
+--     ['openapi.*%.ya?ml'] = 'yaml.openapi',
+--     ['openapi.*%.json'] = 'json.openapi',
+--   },
+-- }
+-- ```
+return {
+  cmd = { 'vacuum', 'language-server' },
+  filetypes = { 'yaml.openapi', 'json.openapi' },
+  root_markers = { '.git' },
+}