Whiteboard runtime notices

The application engine is MIT; dependencies and fonts have their own terms.
THIRD-PARTY-NOTICES.txt provides exact dependency notices.
font-active-metadata.txt, font-notices.txt and font-standard-OFL-1.1.txt
provide original declarations and complete applicable font terms.
font-OFL-1.1.txt and font-derivation.txt cover OpusDesk Sans.
whiteboard-source-notices.zip contains preferred sources, 155 dependency
metadata/notice collections, and the standalone reproducible font recipe.
The personal-use Virgil3 root copy and legacy Liberation1.05 font are excluded.