chore: add type annotations and resolve LSP warnings (#2555)

* chore: add type annotations to (almost) all functions

* stylua

* Add classes for symlink nodes

* Replace deprecated `@vararg`

* Move node classes to `node` module

* Fix `Symlink*` classes

* add vim and libuv runtime for luals, qualify libuv types

* add scripts/luals-check, not quite ready for CI

* additional nil checks for git/init.lua and git/runner.lua

* additional nil checks for nvim-tree.lua

* wrap vim.cmd-as-a-function calls inside functions

* vim.tbl_filter predicate returns booleans

* Revert "add scripts/luals-check, not quite ready for CI"

This reverts commit c70229cad9.

* Add `MinimalNode` class in `marks` module

* Fix various LSP warnings

* stylua

* Fix `Explorer` class, update related annotations and add necessary checks

* Add missing annotations to `live-filter`

* Add temporary aliases for `uv.*` types

* Resolve remaining LSP warnings

* Revert changes not related to internal types

* Minor adjustments

* Update doc comments style

* Minor adjustments (pt. 2)

---------

Co-authored-by: Alexander Courtis <alex@courtis.org>

lua/nvim-tree/events.lua

@@ -21,16 +21,22 @@ M.Event = {
   TreeRendered = "TreeRendered",
 }
 
+---@param event_name string
+---@return table
 local function get_handlers(event_name)
   return global_handlers[event_name] or {}
 end
 
+---@param event_name string
+---@param handler function
 function M.subscribe(event_name, handler)
   local handlers = get_handlers(event_name)
   table.insert(handlers, handler)
   global_handlers[event_name] = handlers
 end
 
+---@param event_name string
+---@param payload table|nil
 local function dispatch(event_name, payload)
   for _, handler in pairs(get_handlers(event_name)) do
     local success, error = pcall(handler, payload)