EASY: tag-register all raw arrays

[karlnapf]

See #4100

This is in order to fully transition to the new parameter framework.
Simple entrance task. We want to register all raw array parameters with the tags framework.

1. Grep for add_vector in all of Shogun's code base
2. For every parameter registration, add a watch_param as in the example PR tag-register raw array #4100
3. Run tests (should be fine, but better check)
4. Send PR

[karlnapf]

done via #4116