Add Iceberg table register and unregister procedures

[kiersten-stokes]

Description

Adds two procedures for Iceberg tables: register_table and unregister_table, as well as documentation on how to invoke them.

toHiveColumns has been moved to IcebergUtil from HiveTableOperations. A function dropTableFromMetastore is also added that ensures that data/metadata isn't deleted in during 'unregister' for file-based metastores (mostly for testing purposes).

Motivation and Context

Fixes #20421

Impact

Two new procedures will be accessible to users

Test Plan

Tested manually and added dedicated unit tests and smoke tests.

Contributor checklist

• Please make sure your submission complies with our development, formatting, commit message, and attribution guidelines.
• PR description addresses the issue accurately and concisely. If the change is non-trivial, a GitHub Issue is referenced.
• Documented new properties (with its default value), SQL syntax, functions, or other functionality.
• If release notes are required, they follow the release notes guidelines.
• Adequate tests were added if applicable.
• CI passed.

Release Notes

Please follow release notes guidelines and fill in the release notes below.

== RELEASE NOTES ==

Iceberg Changes
* Add register and unregister procedures for Iceberg tables

[github-actions]

Codenotify: Notifying subscribers in CODENOTIFY files for diff 003e9b9...d5cf0b4.

Notify	File(s)
@steveburnett	presto-docs/src/main/sphinx/connector/iceberg.rst

[steveburnett]

LGTM! (docs)

[hantangwangd]

Overall looks good! Some little comments.

[tdcmeehan]

Thank you for the extensive tests

[tdcmeehan]

@kiersten-stokes please fix the merge conflict!

@ChunxuTang any other comments?

[kiersten-stokes]

@kiersten-stokes please fix the merge conflict!

@tdcmeehan done!

[hantangwangd]

LGTM! Thanks for the job.

[ChunxuTang]

LGTM. @kiersten-stokes Thanks for the nice work!