Andrej Kolchin 2d0a60ac67
Use native toml datetime type in to toml (#13018)
# Description

Makes `to toml` use the `toml::value::Datetime` type, so that `to toml`
serializes dates properly.


# User-Facing Changes

`to toml` will now encode dates differently, in a native format instead
of a string. This could, in theory, break some workflows:

```Nushell
# Before:
~> {datetime: 2024-05-31} | to toml | from toml | get datetime | into datetime
Fri, 31 May 2024 00:00:00 +0000 (10 hours ago)
# After:
~> {datetime: 2024-05-31} | to toml | from toml | get datetime | into datetime
Error: nu:🐚:only_supports_this_input_type

  × Input type not supported.
   ╭─[entry #13:1:36]
 1 │ {datetime: 2024-05-31} | to toml | from toml | get datetime | into datetime
   ·                                    ────┬────                  ──────┬──────
   ·                                        │                            ╰── only string and int input data is supported
   ·                                        ╰── input type: date
   ╰────
```

Fix #11751
2024-06-07 07:43:30 -05:00
..