blink.cmp extended_filetypes support

[wattse13]

According to the blink.cmp documentation, it is possible to enable additional snippets for specified file types using the extended_filetypes option while using friendly-snippets. I would like to do this so that I can enable friendly-snippets's Unity snippets on top of the the usual c# snippets while editing .cs files.

I've looked through the nvf documentation, and I don't think I see any options for configuring extended_filetypes.

The following code is taken from the blink.cmp documentation:

sources = {
  providers = {
    snippets = {
      opts = {
        friendly_snippets = true, -- default

        -- see the list of frameworks in: https://github.com/rafamadriz/friendly-snippets/tree/main/snippets/frameworks
        -- and search for possible languages in: https://github.com/rafamadriz/friendly-snippets/blob/main/package.json
        -- the following is just an example, you should only enable the frameworks that you use
        extended_filetypes = {
          markdown = { 'jekyll' },
          sh = { 'shelldoc' },
          php = { 'phpdoc' },
          cpp = { 'unreal' }
        }
      }
    }
  }
}

Is there a way to add something like this to an nvf config?

Any help would be greatly appreciated, thanks!