Add builder to help create Schemas for shredding (ShreddedSchemaBuilder) (#8940)

- Closes #8922

# Rationale for this change

Basically a helper to simplify this:

```rust
let shredding_type = ShredTypeBuilder::default()
    .with_path("a", &DataType::Int64)
    .with_path("b.c", &DataType::Utf8)
    .with_path("b.d", &DataType::Float64)
    .build();

assert_eq!(
    shredding_type,
    DataType::Struct(Fields::from(vec![
        Field::new("a", DataType::Int64, true),
        Field::new(
            "b",
            DataType::Struct(Fields::from(vec![
                Field::new("c", DataType::Utf8, true),
                Field::new("d", DataType::Float64, true),
            ])),
            true
        ),
    ]))
);
```

# What changes are included in this PR?

1. Added `ShredTypeBuilder`
2. Updated existing tests cases to use this new primitive

# Are these changes tested?

Yes

# Are there any user-facing changes?
Add a new public interface

---------

Co-authored-by: Andrew Lamb <andrew@nerdnetworks.org>

Author: XiangpengHao

parquet-variant-compute/src/lib.rs

@@ -56,7 +56,7 @@ pub use variant_array_builder::{VariantArrayBuilder, VariantValueArrayBuilder};
 
 pub use cast_to_variant::{cast_to_variant, cast_to_variant_with_options};
 pub use from_json::json_to_variant;
-pub use shred_variant::shred_variant;
+pub use shred_variant::{IntoShreddingField, ShreddedSchemaBuilder, shred_variant};
 pub use to_json::variant_to_json;
 pub use type_conversion::CastOptions;
 pub use unshred_variant::unshred_variant;