feat: Support md5/digest in metadata for every property in vertex and edge.

[jiajunly]

Describe the enhancement requested

As https://github.com/apache/incubator-graphar/issues/548#issuecomment-2251879274 said, we can add an option when writing GraphAr data to create a digest or md5 record for each file.

It will make it easier for users to manage data and help developers check data integrity.

Component(s)

Format, Other