~jaro/balkon

ref: 4ff2ea2a04080eb644de0fba63237633c025ab0d balkon/test/Data/Text/ParagraphLayout/Rich d---------
Consolidate tree types into one.
Test interaction between boxes and mixed script.
Test soft breaking on box spacing.
Test line breaking in boxes.
Make paragraph direction explicit in tests.
Add required textDirection to TextOptions.
Test layout with mixed font sizes.
Test Rich line wrapping.
Test Rich layout.