feature: prepend_args support for "nvim-lint"

[UtkarshVerma]

Did you check the docs?

• I have read all the LazyVim docs

Is your feature request related to a problem? Please describe.

If I want to specify extra args for linters, there's no provision for doing that. For conform.nvim, we have prepend_args and LazyVim merges the passed opts with the defaults.

Describe the solution you'd like

As it is with formatters, support for this would be great. For example, since nvim-lint does not have a prepend_args key, we could reserve this key just for LazyVim where the config() function extends the default linter with the passed args.

This would result in a clean config on the user side like this:

  {
    "nvim-lint",
    opts = {
      linters_by_ft = {
        sh = { "shellcheck" },
      },
      linters = {
        shellcheck = {
          prepend_args = {
            "-x",
          },
        },
      },
    },
  },

Describe alternatives you've considered

mfussenegger/nvim-lint#397 discusses this, but when I assigned a function for shellcheck doing the same list extension, it did not work as the function overrides the default linter table.

Additional context

For now, in my config I have the following if condition to implement this feature.

      local lint = require("lint")
      for name, linter in pairs(opts.linters) do
        if type(linter) == "table" and type(lint.linters[name]) == "table" then
          lint.linters[name] = vim.tbl_deep_extend("force", lint.linters[name], linter)

          if type(linter.prepend_args) == "table" then
            vim.list_extend(lint.linters[name].args, linter.prepend_args)
          end
        else
          lint.linters[name] = linter
        end
      end
      lint.linters_by_ft = opts.linters_by_ft