refactor: improve API readability and tidy actions submodules (#2593)

* refactor: improve API readability, tidy actions modules

* Apply requested changes

* `actions/reloaders/reloaders.lua` -> `actions/reloaders.lua`

---------

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

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

@@ -0,0 +1,44 @@
+local lib = require "nvim-tree.lib"
+local utils = require "nvim-tree.utils"
+local filters = require "nvim-tree.explorer.filters"
+local reloaders = require "nvim-tree.actions.reloaders"
+
+local M = {}
+
+local function reload()
+  local node = lib.get_node_at_cursor()
+  reloaders.reload_explorer()
+  utils.focus_node_or_parent(node)
+end
+
+function M.custom()
+  filters.config.filter_custom = not filters.config.filter_custom
+  reload()
+end
+
+function M.git_ignored()
+  filters.config.filter_git_ignored = not filters.config.filter_git_ignored
+  reload()
+end
+
+function M.git_clean()
+  filters.config.filter_git_clean = not filters.config.filter_git_clean
+  reload()
+end
+
+function M.no_buffer()
+  filters.config.filter_no_buffer = not filters.config.filter_no_buffer
+  reload()
+end
+
+function M.no_bookmark()
+  filters.config.filter_no_bookmark = not filters.config.filter_no_bookmark
+  reload()
+end
+
+function M.dotfiles()
+  filters.config.filter_dotfiles = not filters.config.filter_dotfiles
+  reload()
+end
+
+return M