Feature request: Keyboard shortcuts for accessing google search result tabs "maps" and "images"

[ste-man]

Hi, I'm using your excellent Firefox addon for my daily googling.
I'm not clever enough to add the functionality myself, but I miss the feature of being able to change search result type to "images" and "maps" with my keyboard when performing google searches.

For example, I would suggest the following:
keyboard key "i" to select "google image search results"
keyboard key "m" to select "google maps search results"
keyboard key "n" to select "google news search results"

Thank you and have a great day!