[FEATURE] line_dash vectorizable where appropriate #10203
Description
For "multi" glyphs and some annotation, it is currently only possible to specify a single line dash style. It could be possible to make this property "vectorized" so that e.g. different individual lines in a multi_line can have different dash styles.
The slight trickiness here will be that dash styles are expressed as lists of numbers, so vectorizing dash styles means accepting "lists of lists" which is not the case for any other property AFAIK. Additionally there are some string aliases for some of the common simple patterns, so those will also have to be handled.