bliss: Feature user tags per hardware

BLISS allow to tag objects.

This PR allow to expose them to the web side.

I aim to use that to pass some structural state like, anticlockwise and clockwise for motors. But this could be used for various things.

BLISS config

  - name: srot
    steps_per_unit: 10000
    velocity: 20
    acceleration: 10000
    low_limit: -10000
    high_limit: 10000
    unit: deg
    user_tag:
    - anticlockwise

Daiquiri