Policy: Add Encrypted Comms. Methods

FlowCrypt is how we manage PGP keys meow

Sam Bacha <[email protected]>

https://keys.openpgp.org/vks/v1/by-fingerprint/638167A8853D728DD3DE7EFC270016DC89B9258C
Sam Bacha <[email protected]> [expires: 2027-01-04]

feat(0.1.0): security policy