[native] Add component to display encrypted images
Summary:
This diff adds a component that is able to decrypt and display encrypted images. It is similar to the <RemoteImage> component but I rewrote it to hooks.
The decryption is performed on every mount so this is very inefficient, caching will be added later.
Test Plan: The component itself is tested together with subsequent diffs where it is used.
Reviewers: atul, marcin, ashoat, inka
Reviewed By: ashoat
Subscribers: ginsu, tomek
Differential Revision: https://phab.comm.dev/D7225