Support drug classification

[zhx828]

We've been asked whether the search box support the drug classification(PARP1 inhibitors for instance). To support this feature, we need to have a reliable data source to keep the list up to date. Hemonc is recommended by the team https://hemonc.org/wiki/Category:PARP1_inhibitors

In our existing Oncology Tx page, we have included the info under the column Mechanism of action or drug target.

[zhx828]

To digitize the Oncology Tx page, we need to support the following as well. They should all be placed under the flag table

• class of agent
• targeted therapy
• precision oncology therapy
• ngs sequencing detectable