Range refactor (#12405)

# Description
Currently, `Range` is a struct with a `from`, `to`, and `incr` field,
which are all type `Value`. This PR changes `Range` to be an enum over
`IntRange` and `FloatRange` for better type safety / stronger compile
time guarantees.

Fixes: #11778 Fixes: #11777 Fixes: #11776 Fixes: #11775 Fixes: #11774
Fixes: #11773 Fixes: #11769.

# User-Facing Changes
Hopefully none, besides bug fixes.

Although, the `serde` representation might have changed.

crates/nu-protocol/src/eval_base.rs

@@ -168,8 +168,9 @@ pub trait Eval {
                 } else {
                     Value::nothing(expr.span)
                 };
+
                 Ok(Value::range(
-                    Range::new(expr.span, from, next, to, operator)?,
+                    Range::new(from, next, to, operator.inclusion, expr.span)?,
                     expr.span,
                 ))
             }