Decide fate of -viz starters and viz tool

[astrojuanlu]

Hi @ankatiyar and @DimedS , I am not sure if it is worth to keep the viz starters after removing ET. The difference I see are the plotly charts. I feel we can keep the viz starters and rename them to spaceflights-pandas and spaceflights-pyspark to get the plots. What do you think ?

Originally posted by @ravi-kumar-pilla in #262 (comment)

About keeping "Viz" as a tool in kedro new, initially the idea was to add make it add kedro-viz as a dependency, but... it was already a dependency of the non -viz starters!

kedro-starters/spaceflights-pandas/{{ cookiecutter.repo_name }}/requirements.txt

Line 6 in adc6eb8

kedro-viz>=6.7.0

Therefore we need to

• Agree on having only spaceflights-pandas and spaceflights-pyspark, optionally merging the contents of -viz
• Agree on what to do with the viz tool in kedro new