analyzer: Add conditional packages before plugins and annotations run
analyzer: Add conditional packages before plugins and annotations run

We also delay calculating class versions until after conditional packages
added and plugins run.

Fixes https://github.com/bndtools/bnd/issues/1920

Signed-off-by: BJ Hargrave <3d26bb3930946e3370762d769a073cece444c2d8@bjhargrave.com>

magnet/bnd,mcculls/bnd,lostiniceland/bnd,lostiniceland/bnd,psoreide/bnd,magnet/bnd,lostiniceland/bnd,psoreide/bnd,mcculls/bnd,psoreide/bnd,magnet/bnd,mcculls/bnd