[ENHANCEMENT] Allow dataset (e.g. traces) creation to provide span_id links back to the original trace

[mikeldking]

Right now you can download traces as a dataset, and then upload it as the "pure" dataset but the link to the original trace/span is lost - which can be important for book keeping and troubleshooting.

Give the facilities to link datasets back to spans when uploading:

px.Client().upload_dataset(
    dataframe=spans,
    input_keys=[],
    output_keys=[],
    span_id_key="context.span_id"
    dataset_name="real-estate",
)

[dosubot]

Hi, @mikeldking. I'm Dosu, and I'm helping the Arize Phoenix team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• Enhancement proposal to retain links to original traces or spans upon dataset upload.
• Aims to improve bookkeeping and troubleshooting by preserving span_id.
• No further comments or activity since the issue was opened.

Next Steps:

• Please confirm if this issue is still relevant to the latest version of the Arize Phoenix repository by commenting here.
• If there is no further activity, the issue will be automatically closed in 7 days.

Thank you for your understanding and contribution!