Pull request #4595: snort_ml: build models into a BinaryClassifierSet

Pull request #4595: snort_ml: build models into a BinaryClassifierSet

Merge in SNORT/snort3 from ~BRASTULT/snort3:snort_ml to master

Squashed commit of the following:

commit e4f35d63b7bc2fa38176408466afe8576d0f77f0
Author: Brandon Stultz <brastult@cisco.com>
Date:   Fri Jan 31 02:43:25 2025 -0500

    snort_ml: build models into a BinaryClassifierSet

commit 7ac7827b65192d6319893498585b48e0c7809e1b
Author: Brandon Stultz <brastult@cisco.com>
Date:   Fri Jan 31 01:16:00 2025 -0500

    utils: add is_directory_path

commit e3897fe6bf08d2fba2406f612b4bf3b31e07cfea
Author: Brandon Stultz <brastult@cisco.com>
Date:   Thu Jan 30 11:57:53 2025 -0500

    network_inspectors: rename kaizen to snort_ml