Add popup messages for the Virtual Keyboard buttons

[ihhub]

Preliminary checks

• [x] I've checked that there aren't other open issues on the same topic.

Describe the problem requiring a solution

At the moment the Virtual Keyboard does not have any popup messages for its buttons for mouse right clicking:

Describe the possible solution

Add popup dialogs at least for OKAY button as a bare minimum.

Additional info

No response

[LuisNavia26]

Hi, can I be assigned to work on this issue?

[ihhub]

Hi @LuisNavia26 , it's done.

[LuisNavia26]

what should the pop ups say?

[ihhub]

Hi @LuisNavia26 , for OKAY button the same as for other windows. For each button representing a letter or a number just a dialog with a title of this symbol. For special button like language switching - title and small description.

[jrcleeman]

starting to work on this one

[jrcleeman]

made pr