Factor out common Dnatco code

CHANGELOG.md

src/extensions/dnatco/color.ts

src/extensions/dnatco/confal-pyramids/behavior.ts

src/extensions/dnatco/confal-pyramids/color.ts

src/extensions/dnatco/confal-pyramids/property.ts

src/extensions/dnatco/confal-pyramids/representation.ts

src/extensions/dnatco/confal-pyramids/types.ts

src/extensions/dnatco/confal-pyramids/util.ts

src/extensions/dnatco/property.ts

src/extensions/dnatco/types.ts

src/extensions/dnatco/util.ts