This PR updates the Elixir extension to respect the LSP settings for
`elixir-ls`:

```json
"lsp": {
  "elixir-ls": {
    "settings": {
      "dialyzerEnabled": false
    }
  }
}
```

```
Received workspace/didChangeConfiguration
Received client configuration via workspace/didChangeConfiguration
%{"dialyzerEnabled" => false}
Loaded DETS databases in 33ms
Loaded DETS databases in 10ms
Compiling 65 files (.ex)
```

Release Notes:

- N/A