[table]Hide/select table columns on dashboards and export filtered table in CSV

[NikeNano]

Is your feature request related to a problem? Please describe.
I would like to filter a table in a dashboard to only show a subset of the columns in the original table in Superset. I would also like to have the possibility to select a subset of columns to export. This feature would bring values to non technical users that extract data from Superset to other tools.

Describe the solution you'd like
The possibility for a user to select which columns that are displayed in a dashboard table.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
I would be happy to contribute to this, but might need some pointers since I am new to Superset.

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[NikeNano]

@filipvitez

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. For admin, please label this issue .pinned to prevent stale bot from closing the issue.

[junlincc]

Changed title to [table]Hide table columns on dashboards and export filtered table in CSV

It does seems helpful. we should implement at least the first request. @villebro