feat(#3037): add API node.buffer.delete, node.buffer.wipe (#3040)

* feat(mappings): add key map to close file buffer

* feat: implement Api.node.buffer.delete

* feat: implement Api.node.buffer.wipe

* refactor: add util fn for common delete ops on bufs

* fix: minor fixes

* refactor: fix lint issues

* fix: undo unintended ApiTreeToggleOpts change

* fix: change error message level to info

* fix: remove unused opts

* refactor: merge delete-buffer and wipe-buffer into single buffer file

* refactor: make wipe and delete fns take a node instead of a file path

* docs: update help with new API commands

* remove refactored utils.lua

* remove unused static setup

* tweak doc

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

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

@@ -4,6 +4,7 @@ M.file_popup = require("nvim-tree.actions.node.file-popup")
 M.open_file = require("nvim-tree.actions.node.open-file")
 M.run_command = require("nvim-tree.actions.node.run-command")
 M.system_open = require("nvim-tree.actions.node.system-open")
+M.buffer = require("nvim-tree.actions.node.buffer")
 
 function M.setup(opts)
   require("nvim-tree.actions.node.system-open").setup(opts)