Request to allow mutiline `@type` values

[wauterboi]

Sometimes, a @type value can be very long, i.e.

---@type {filepath: string?, type: 'unknown'|'binary'|'stock'|'path', loader: function}

Of course, while I could clean-up the above by replacing type with its own alias, I still think it would be nice to be able to do this:

---@type {
---  filepath: string?,
---  type: 'unknown'|'binary'|'stock'|'path',
---  loader: function
---}

[firas-assaad]

Alternatively (or in addition), it'd be nice if we had file-scoped class definitions so you could use the existing @class syntax without creating a new definition for the entire project. It's the main reason I prefer ---@type { ... } most of the time.

Edit: or namespaces like in #1167

[corporalik]

just was trying to write a multiline @alias in same manner, but unfortunately :)

---@alias Alias {
---[1]:string
---[2]:number
---[3]:boolean
...
---[25]:string
---}