Is your feature request related to a problem? Please describe.
We are giving Discover a visual refresh, this issue aims to summarize the changes in the grid header section.

Describe the solution you'd like
For our upcoming Discover redesign there are 4 changes requested (Figma)

• Change the icon for additional actions to boxesVertical
• Show the additional actions on hover or focus of the heading cell
• Allow columns to be right - aligned for e.g. numeric values
• Show the sorting arrow on the right side of the columns name

Describe alternatives you've considered

• A local CSS based change, but for these changes it doesn't seem to be possible
• Make this part configureable so we could apply these change locally