Add a real profile for testing.

This is a simple profile which the fc-client module understands.

Currently the client only parses a subset of the full profile spec.
Fields like "applies-to" and "resources" are disregarded for now.

I'll flesh out the missing fields on the client side once the profile
builder can start generating some real data, so the format for those
fields can still be changed if needed.

Also note I don't need the type signature for the GSettings keys.
dconf itself does not care about type signatures, and the schemas
should already be installed on the client machine.