[FEATURE]: Create a migration "dry run" for DBFS root tables

[FastLee]

Is there an existing issue for this?

• [X] I have searched the existing issues

Problem statement

Before migrating we have to present the user a list of tables that will be migrated.

Proposed Solution

• Scan the mapping table
• Identify the dbfs root tables to be migrated
• Show a list of these tables
• If the list is more than 20 tables long, display the number breakdown by schema.

Additional Context

No response