feat(#3132): add api.node.expand and api.node.collapse (#3133)

* feat: allow passing node to collapse all

* refactor: use snake case

* feat: handle api legacy calls and update signature

* refactor: make sure open is a boolean

* doc: collapse_all

* Revert "doc: collapse_all"

This reverts commit d243da3e14.

* add api.node.collapse

* add api.node.expand

* add api.node.expand

---------

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

lua/nvim-tree/actions/tree/modifiers/init.lua

@@ -1,10 +1,10 @@
 local M = {}
 
-M.collapse_all = require("nvim-tree.actions.tree.modifiers.collapse-all")
-M.expand_all = require("nvim-tree.actions.tree.modifiers.expand-all")
+M.collapse = require("nvim-tree.actions.tree.modifiers.collapse")
+M.expand = require("nvim-tree.actions.tree.modifiers.expand")
 
 function M.setup(opts)
-  M.expand_all.setup(opts)
+  M.expand.setup(opts)
 end
 
 return M