add 'addedByHRA' subset tag

[nicolevasilevsky]

The HRA team needs to track terms added by HRA and HuBMAP team members. I will add a subset tag 'addedByHRA' to enable tracking.

[nicolevasilevsky]

next, add the subset tag to the terms that have been added to CL but the HRA team:
https://docs.google.com/spreadsheets/d/1YvooQLGn_wjcRJiQTrKSz5xVTWGST3Vtf7ecty7K0kQ/edit?gid=0#gid=0