Nushell Updates: Command Enhancements and Documentation Improvements

- njbull4 created [cp, mv, and rm commands need to support -i flag](https://github.com/nushell/nushell/pull/5523) - CozyPenguin created [bump umask crate to 2.0.0](https://github.com/nushell/nushell/pull/5514) - jmoore34 created [Update comment in default_config.nu [skip ci]](https://github.com/nushell/nushell/pull/5496) - pejato created [Make $nothing | into string == ""](https://github.com/nushell/nushell/pull/5490) - onthebridgetonowhere created [Fix cp bug](https://github.com/nushell/nushell/pull/5462) - PurityLake created [Made a change to completion resolution order](https://github.com/nushell/nushell/pull/5440) - gipsyh created [Add split number flag in `split row`](https://github.com/nushell/nushell/pull/5434) ## Documentation - sholderbach created [Remove outdated reference to `open` pager](https://github.com/nushell/nushell.github.io/pull/446), and [Document the octal binary literals](https://github.com/nushell/nushell.github.io/pull/445), and [Mention default values for command parameters.](https://github.com/nushell/nushell.github.io/pull/434) - unional created [docs: add `pwd` to `coming_from_bash.md`](https://github.com/nushell/nushell.github.io/pull/444) - hustcer created [Update zh-CN home page and keep the Chinese and English docs in sync](https://github.com/nushell/nushell.github.io/pull/443), and [Update some zh-CN translations from commit: 008c89fc26](https://github.com/nushell/nushell.github.io/pull/442), and [Update some zh-CN translatons from commit: 6f61fadb69](https://github.com/nushell/nushell.github.io/pull/438) - rgwood created [Update front page](https://github.com/nushell/nushell.github.io/pull/441) - mdmundo created [Update windows_terminal_default_shell.sh](https://github.com/nushell/nushell.github.io/pull/440) - kubouch created [Add env.nu to env conversions section](https://github.com/nushell/nushell.github.io/pull/439), and [Document config as environment variable](https://github.com/nushell/nushell.github.io/pull/437) - TaKO8Ki created [Translate `/ja/README.md` to Japanese](https://github.com/nushell/nushell.github.io/pull/436)

This section details updates to Nushell, including command improvements and documentation enhancements. njbull4 added support for the `-i` flag to the `cp`, `mv`, and `rm` commands. CozyPenguin updated the `umask` crate. jmoore34 updated a comment in the default configuration. pejato made the output of `$nothing | into string` an empty string. onthebridgetonowhere fixed a `cp` bug, PurityLake adjusted completion resolution order, and gipsyh added a split number flag to the `split row` command. Documentation updates include sholderbach's removal of outdated references and documentation of binary literals and default parameter values. unional added `pwd` to the coming from bash documentation. hustcer updated the Chinese documentation, rgwood updated the front page, mdmundo updated a script for Windows Terminal, kubouch added information on `env.nu` and config as an environment variable, and TaKO8Ki translated the README to Japanese.