Compress history_node->data cell

Some data cells can be 2M or so large, which isn't great, considering this is just proto3 data, written once, rarely read. They should be compressed by default, perhaps with some minimum size that is worth the effort.
Example from a production workload:

It seems I can use this:

The PayloadCodec interface:
type PayloadCodec interface {
    Encode(payloads []*commonpb.Payload) ([]*commonpb.Payload, error)
    Decode(payloads []*commonpb.Payload) ([]*commonpb.Payload, error)
}

If approved, I'll give it a try.

Start by locating the PayloadCodec interface and the history_node data-cell write and read paths. Determine where a minimum compression threshold belongs and verify that default compression preserves decoding behavior; done means large cells are compressed while smaller cells avoid unnecessary work.