feat(experimental): install rockspec dependencies

[mrcjkb]

See also: nvim-neorocks/rocks.nvim#527

Requires an up-to-date rocks.nvim with the following experimental feature enabled:

vim.g.rocks_nvim = {
  -- ...
  experimental_features = {
    "ext_module_dependency_stubs",
  },
}

[teto]

might be clearer/less error prone to recommand:

  experimental_features = {
    require'rocks.extension'.ext_module_dependency_stubs,
  },

but it depends on how it's conceived, like can it be removed anytime ? can rocks extension add their own experimental feature ?

[mrcjkb]

might be clearer/less error prone to recommand:

  experimental_features = {
    require'rocks.extension'.ext_module_dependency_stubs,
  },

but it depends on how it's conceived, like can it be removed anytime ? can rocks extension add their own experimental feature ?

The ext_module_dependency_stubs feature is a rocks.nvim (API) feature. There's nothing to be enabled in the extensions. They always use use the API, it just does nothing if the feature is disabled.