Edit CSV file using table editor #3459

since github has rendering-csv-and-tsv-data feature, but cannot render it when editing by clicking the pen icon.

• it it very convenient for table editor cause the presentation is easier to edit than comma-separated

By the way, I doesn't know github if has roadmap to support it.

there is no public roadmap found for it : https://github.com/github/roadmap/projects/1?card_filter_query=csv

my test repo: https://github.com/zhang699/csv-repo/blob/master/test.csv

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