Add PEP (Politically Exposed Persons) List

[adamdecaf]

A Politically Exposed Persons list would be useful as it's a list where special care/caution should be placed on transfers, bank accounts, etc. This list contains current and former elected officials, celebrities, and other public figures.

List Sources:

• https://www.cia.gov/resources/world-leaders/foreign-governments/
• https://www.opensanctions.org/datasets/peps/ (Behind License)

[adamdecaf]

We could look at ingesting the PEP list from OpenSanctions (by passing an API key) and refreshing the list on a periodic interval. Discussed in #353