feat(iceberg): introduce remove snapshot action (#21)

* feat(iceberg): basic remove snapshot

* feat(iceberg): introduce new properties for remove snapshots

* feat(iceberg): support remove schemas

* refactor(iceberg): refactor file org

* address comments

* refactor(iceberg): refactor and ut

* fix(iceberg): fix integration-test

* typo

* typo

* typo

* typo

Author: Li0k

Cargo.lock

@@ -77,6 +77,7 @@ pub mod inspect;
 pub mod scan;
 
 pub mod expr;
+pub mod remove_snapshots;
 pub mod transaction;
 pub mod transform;