feat: add table reconciliation utilities

[WenyXu]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

#6429

What's changed and what's your intention?

This PR introduces utilities for table reconciliation and column metadata validation.

The new utilities provide three main functions:

1. check_column_metadatas_consistent() - Verifies consistency across regions.
2. resolve_column_metadatas_with_use_metasrv_strategy() - Resolves inconsistencies in column metadata, uses metasrv as source of truth.
3. resolve_column_metadatas_with_use_latest_strategy() - Resolves inconsistencies in column metadata, uses highest schema version.
4. check_column_metadata_invariants - Checks schema invariants

Ensures schema invariants are maintained:

• Primary key columns must remain exactly the same in name and column id.
• Timestamp column must remain exactly the same in name and column id.
• All partition key columns must be present in new column metadata

PR Checklist

Please convert it to a draft if some of the following conditions are not met.

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.
• API changes are backward compatible.
• Schema or data changes are backward compatible.

[fengjiachun]

Rest LGTM