~jaro/balkon

ref: 2d06bc9a995587a140a440f89cb37923fcb7f46a balkon/test/Data/Text/ParagraphLayout/Rich d---------
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.