Cabal formatter options are not present in the extension

[fendor]

We should have a

        "haskell.cabalFormattingProvider": {
          "scope": "resource",
          "type": "string",
          "enum": [
            "cabal-gild",
            "cabal-fmt",
            "none"
          ],
          "default": "cabal-gild",
          "description": "The formatter to use when formatting a document or range of a cabal formatter. Ensure the plugin is enabled."
        },

[fendor]

Fixed by #1100