Add new operators has and not-has (#14841)

# Description
This PR add 2 new operators, `has` and `not-has`. They are basically
`in` and `not-in` with the order of operands swapped.

Motivation for this was the awkward way of searching for rows that
contain an item using `where`

```nushell
[[name, children]; [foo, [a, b, c]], [bar [d, e, f]]]
| where ("e" in $it.children)
```
vs
```nushell
[[name, children]; [foo, [a, b, c]], [bar [d, e, f]]]
| where children has "e"
``` 

# User-Facing Changes
Added `has` and `not-has` operators, mirroring `in` and `not-in`.

# Tests + Formatting

- 🟢 toolkit fmt
- 🟢 toolkit clippy
- 🟢 toolkit test
- 🟢 toolkit test stdlib

# After Submitting

crates/nu-engine/src/eval_ir.rs

@@ -952,6 +952,8 @@ fn binary_op(
             }
             Comparison::In => lhs_val.r#in(op_span, &rhs_val, span)?,
             Comparison::NotIn => lhs_val.not_in(op_span, &rhs_val, span)?,
+            Comparison::Has => lhs_val.has(op_span, &rhs_val, span)?,
+            Comparison::NotHas => lhs_val.not_has(op_span, &rhs_val, span)?,
             Comparison::StartsWith => lhs_val.starts_with(op_span, &rhs_val, span)?,
             Comparison::EndsWith => lhs_val.ends_with(op_span, &rhs_val, span)?,
         },