Add MPL 2.0

Signed-off-by: enyst <engel.nyst@gmail.com>
Add maintainer of MPL 1.1. Set SPDXy URL to opensource.org.

Signed-off-by: enyst <engel.nyst@gmail.com>
Add URL and maintainer to MPL 1.0.

Signed-off-by: enyst <engel.nyst@gmail.com>
Merge pull request #19 from engelnyst/mpl

Additions to MPL