[ASFXNB10] Add pre/post-query filtering and solarize

    We use a priority queue with positive (> 0) priorities
    for pre-query param filtering, negative (< 0) priorities
    for post-query result massage.

    Note that we apply filters with a per-model name. This
    will allow us to support per-request filter suppression.

    I suspect this can all be cleaned up some. Recommendations
    welcome.