Add functions for each Value case (#9736)

# Description
This PR ensures functions exist to extract and create each and every
`Value` case. It also renames `Value::boolean` to `Value::bool` to match
`Value::test_bool`, `Value::as_bool`, and `Value::Bool`. Similarly,
`Value::as_integer` was renamed to `Value::as_int` to be consistent with
`Value::int`, `Value::test_int`, and `Value::Int`. These two renames can
be undone if necessary.

# User-Facing Changes
No user facing changes, but two public functions were renamed which may
affect downstream dependents.

crates/nu-command/src/formats/from/ods.rs

@@ -145,7 +145,7 @@ fn from_ods(
                         DataType::String(s) => Value::string(s, head),
                         DataType::Float(f) => Value::float(*f, head),
                         DataType::Int(i) => Value::int(*i, head),
-                        DataType::Bool(b) => Value::boolean(*b, head),
+                        DataType::Bool(b) => Value::bool(*b, head),
                         _ => Value::nothing(head),
                     };
 

crates/nu-command/src/formats/from/xlsx.rs

@@ -144,7 +144,7 @@ fn from_xlsx(
                         DataType::String(s) => Value::string(s, head),
                         DataType::Float(f) => Value::float(*f, head),
                         DataType::Int(i) => Value::int(*i, head),
-                        DataType::Bool(b) => Value::boolean(*b, head),
+                        DataType::Bool(b) => Value::bool(*b, head),
                         _ => Value::nothing(head),
                     };