Allow per row actions for table

[mturoci]

via @goldentom42

Is your feature request related to a problem? Please describe

This feature would allow app devs to perform actions like delete / edit per row.

Describe the solution you'd like

Provide a button_cell type.

[rasika]

this seems to be a valid case. I also came-across this limitation

[zillionare]

I'd like the ability to edit/delete per row

[mturoci]

See #1324 available in next release (or today in nightly).