Describe the new feature

Add a way to zoom-in and zoom-out in the Browse Data.

This can be accomplished by:

1. New shortcut:
   E.g. CTR + wheel of the mouse to zoom-in and zoom-out (it works with Excel and Calc)
2. New slider (widget) at the very bottom of the GUIs.
   For example the tools available with both LibreOffice and Microsoft softwares.

Here is the screenshot of Calc (identical to the one with Excel...):

Additional info

Please answer these questions before submitting your feature request.

Is your feature request related to an issue? Please include the issue number.

Nope.
I did look in the issue tracker but I was unable to find a similar feature request.
Maybe this option is already implemented but I didn't find a shortcut in the Wiki at this regards (ctr+ wheel mouse does not work...).

Does this feature exist in another product or project? Please provide a link.

It is available in many software by way of a slider (widget) which is always at the very bottom of the GUIs

Do you have a screenshot? Please add screenshots to help explain your idea.

Here is the same slider with Krita (QT stuff...):