fix legend color

stream surface --> stream ribbon, fix description of twoswirls

Add 7 vector field visualization cases (ABC, Bernard, twoswirls, crayfish, tornado, supernova100, rti-velocity_slices)

modify vision rubrics in main cases, add overall visualization goals to every cases, and remove rubrics that cannot be rated by comparing GT and result images

rubric edits from Jason Sun

add 6 stream surface, pathline, path surface, streakline, timeline cases from Kaiyuan Tang

add 16 vector field cases from Kaiyuan Tang

update description and rubric for carp, foot, and lobster

update supernova and tornado GS

add 5 cases from Jason Sun

modify some GS results and task descriptions

first commit