Antoine Stevan 427db0d101
FEATURE: better ansi -e error (#8709)
Should close #8704.

# Description
this PR
- makes the error thrown by things like `ansi -e {invalid: "invalid"}`
more explicit
- makes the `ansi -e` example more explicit about valid / invalid keys

# User-Facing Changes
the error
```bash
> ansi -e {invalid: "invalid"}
Error: nu:🐚:incompatible_parameters

  × Incompatible parameters.
   ╭─[entry #1:1:1]
 1 │ ansi -e {invalid: "invalid"}
   ·         ──────────┬─────────
   ·                   ╰── unknown ANSI format key: expected one of ['fg', 'bg', 'attr'], found 'invalid'
   ╰────
```

the new `ansi -e` example
```bash
  Use structured escape codes
  > let bold_blue_on_red = {  # `fg`, `bg`, `attr` are the acceptable keys, all other keys are considered invalid and will throw errors.
        fg: '#0000ff'
        bg: '#ff0000'
        attr: b
    }
    $"(ansi -e $bold_blue_on_red)Hello Nu World(ansi reset)"
  Hello Nu World
```

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

# After Submitting
```
$nothing
```
2023-04-05 23:14:39 +02:00
..
2023-04-06 07:34:47 +12:00
2023-04-06 07:34:47 +12:00
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2023-04-06 07:34:47 +12:00
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.