Configurable recommendations

For the tagger description pages and CDI pages, we should highlight the latest recommendation.

We could have a recommendations.yaml file in this reco, like

recommendation-name:
  year: 2022
  taggers:
    GN2:
      model_path: BTagging/path/to/model.onnx

  cdis:
    - cdi_path: path/to/cdi.room