Make Parquet SBBF serialize/deserialize helpers public for external reuse

[RoseZhang123]

Which issue does this PR close?

• Closes Make Parquet SBBF serialize/deserialize helpers public for external reuse #8727 .

Rationale for this change

Explained in the issue #8727 .

What changes are included in this PR?

Make the following method signatures public:

pub(crate) fn new(bitset: &[u8]) -> Self;
pub(crate) fn write<W: Write>(&self, mut writer: W) -> Result<(), ParquetError>

Are these changes tested?

Added unit tests for them.

Are there any user-facing changes?

Users is now able to deserialize SBBFs straight from storage and re-serialize them form raw bytes.

[alamb]

Thank you @RoseZhang123 -- this is a very nice contribution

I think we need a doc example to serve as documentation and illustration of the usecase, but otherwise this is great

[alamb]

Can you please add a doc example here showing how to use this API with your intended usecase?

That will both help the documentation and ensure we have exposed enough of the API to be useful

For example, if the idea is to save a SBFF using write and then re-create it again, an exmaple that:

1. made a Sbbf (ideally read it from a file)
2. wrote it to a Vec<>
3. Created a new Sbbf from that vec
4. Show that it is the same as the original

it would be nice to mention that a correct argument for creating a sbff can be created using Sbff::write