Publish frontend-app-profile module to npm

Note: This should be sequenced after frontend-support has been applied to frontend-app-profile.

1) Figure out (with 's help, probably!) what are appropriate exports from the "profile" module of frontend-app-profile.
2) Add the necessary npm-related build config.
3) Document that using the npm module for frontend-app-profile is NOT the preferred way of consuming/running the MFE. It's for embedding its guts into a different MFE.
3) Publish it!

Reminder:

• Meet and talk with Doug to see what their needs are with Gatsby/etc.