Add Option to drop all changetset during the migration

[sbouchex]

Discussed in #2597

^{Originally posted by sbouchexbellomie-Philips January 21, 2025}
Hello,

We are migrating without keeping the changeset links (moving from ADOS to git and restarting from scratch) but we don't want to keep the changetset links during the migration.

I'm planning to add an option in the TfsGitRepositoryTool to drop all "changetset"

interested ?

Thanks