[Managed Iceberg] Create tables if needed

[ahmedabu98]

Add support to always create tables if needed. Also add a table cache to reduce the number of loadTable() calls across bundles and threads

[ahmedabu98]

Fixes #32677

[github-actions]

Checks are failing. Will not request review until checks are succeeding. If you'd like to override that behavior, comment assign set of reviewers

[ahmedabu98]

assign set of reviewers

[github-actions]

Assigning reviewers. If you would like to opt out of this review, comment assign to next reviewer:

R: @damondouglas for label java.
R: @damccorm for label build.
R: @Abacn for label io.

Available commands:

• stop reviewer notifications - opt out of the automated review tooling
• remind me after tests pass - tag the comment author after tests pass
• waiting on author - shift the attention set back to the author (any comment or push by the author will return the attention set to the reviewers)

The PR bot will only process comments in the main thread (not review comments).

[damccorm]

LGTM - thanks!