feat(copy_to): add initial avro support

[etolbakov]

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What's changed and what's your intention?

API improvement; extend COPY TO command to support ORC and AVRO formats.

Please explain IN DETAIL what the changes are in this PR and why they are needed:

• Summarize your change (mandatory)
• How does this PR work? Need a brief introduction for the changed logic (optional)
• Describe clearly one logical change and avoid lazy messages (optional)
• Describe any limitations of the current code (optional)

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link:

#1550

[evenyag]

Hi, we are going to switch to the main branch, as mentioned in #3025.

I have changed the base branch of this PR to main.

[etolbakov]

Thanks for doing that @evenyag!
I would need to catchup with Ruihang on this some time next year to discuss the implementation.