Add configuration options for import

**Description**
Currently hooks lacks proper compression support.

**Proposed solution**
Add configurable compression with sensible defaults.

**Priority**: Low/Medium

No files or tests are named in the issue. Start by locating the import path, hooks, and existing configuration handling, then check whether compression support already exists elsewhere. Done means import compression can be configured and sensible defaults are documented and covered by the relevant tests.

Written by the indexing model from the issue text.