Add CovidHub ensemble forecasts (#966)

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

Author: cdcgov-hub-bot[bot]

auxiliary-data/weekly-model-submissions/2025-09-20-models-submitted-to-hub.csv

@@ -0,0 +1,16 @@
+"model_id","designated_model","target"
+"CEPH-Rtrend_covid",TRUE,"wk inc covid hosp"
+"CFA-EpiAutoGP",TRUE,"wk inc covid hosp"
+"CFA_Pyrenew-PyrenewHEW_COVID",FALSE,"wk inc covid hosp"
+"CFA_Pyrenew-Pyrenew_HE_COVID",TRUE,"wk inc covid hosp"
+"CFA_Pyrenew-Pyrenew_HW_COVID",FALSE,"wk inc covid hosp"
+"CFA_Pyrenew-Pyrenew_H_COVID",FALSE,"wk inc covid hosp"
+"CMU-TimeSeries",TRUE,"wk inc covid hosp"
+"CMU-climate_baseline",FALSE,"wk inc covid hosp"
+"NEU_ISI-AdaptiveEnsemble",TRUE,"wk inc covid hosp"
+"UMass-ar6_pooled",TRUE,"wk inc covid hosp"
+"UMass-gbqr",TRUE,"wk inc covid hosp"
+"CFA_Pyrenew-PyrenewHEW_COVID",FALSE,"wk inc covid prop ed visits"
+"CFA_Pyrenew-Pyrenew_E_COVID",FALSE,"wk inc covid prop ed visits"
+"CFA_Pyrenew-Pyrenew_HE_COVID",TRUE,"wk inc covid prop ed visits"
+"CMU-TimeSeries",TRUE,"wk inc covid prop ed visits"