Is your feature request related to a problem or challenge?

Context: I would like to set some self-defined metadata (pretty small, less than 100 bytes) for a particular snapshot in the current snapshot.

Search around the code, I think the best place to store might be snapshot summary.

Interface-wise I imagine something similar to pyiceberg:

• We expose set_properties and get_properties interface for Transaction

Describe the solution you'd like

There're a lot of bad workarounds (i.e. store the metadata into puffin files, hack the TableMetadata, etc), but I would expect the summary update operation to be exposed at transaction layer.

Willingness to contribute

I can contribute to this feature independently