Antoine Stevan 9fcc49e556
REFACTOR: simplify the declaration of extra commands (#9398)
cc/ @stormasm 

# Description
i was about to start the cratification of the 0% commands and thought i
could refactor and simplify a bit the declaration of the `bits`
commands, having hopefully a simpler structure to work with the other
commands 😌

this PR:
- gives real names to all the `bits` commands, instead of `SubCommand`
- make them publicly available inside the `nu-cmd-extra` crate to
declare them through `add_extra_decls`
- move the declaration code to the top-level `mod.nu` of `nu-cmd-extra`
so that all commands can be declared there as in `default_context` in
`nu-command`

# User-Facing Changes
```
$nothing
```

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
-  `toolkit test`
-  `toolkit test stdlib`

# After Submitting
```
$nothing
```
2023-06-10 10:33:33 -07:00
..
2023-06-07 15:07:14 +02:00
2022-02-07 14:54:06 -05:00

Nushell core libraries and plugins

These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.

Foundational libraries are split into two kinds of crates:

  • Core crates - those crates that work together to build the Nushell language engine
  • Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.

Plugins are likewise also split into two types:

  • Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
  • Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.