Added transformers eagle library

Signed-off-by: Artem Godin <artem.godin@gmail.com>
Library update
Library and schematic update

Signed-off-by: Artem Godin <artem.godin@gmail.com>
PSU Schematic update
PSU Board Layout

Signed-off-by: Artem Godin <artem.godin@vaadin.com>