feat(#2598): add api.tree.resize (#2811)

* feat(#2598): Implemented API `tree.resize`

* rely on  when resize

* Fix docs

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

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

@@ -4,12 +4,14 @@ M.find_file = require "nvim-tree.actions.tree.find-file"
 M.modifiers = require "nvim-tree.actions.tree.modifiers"
 M.open = require "nvim-tree.actions.tree.open"
 M.toggle = require "nvim-tree.actions.tree.toggle"
+M.resize = require "nvim-tree.actions.tree.resize"
 
 function M.setup(opts)
   M.find_file.setup(opts)
   M.modifiers.setup(opts)
   M.open.setup(opts)
   M.toggle.setup(opts)
+  M.resize.setup(opts)
 end
 
 return M