Show more useful info on battle interface.

[rglezg]

Is your feature request related to a problem? Please describe.

Currently the battle interface doesn't show so many useful info. The rectangle on the lower right corner shows the PPs and type of the selected move, but nothing else.
Given that we introduced the physical/special split and could potentially change some of the well know effectiveness between types, the players will have to consult the statistics screen more frequently and / or memorize the changes we have made. Either variant creates unnecessary discomfort.

Describe the solution you'd like

We could to take advantage of that rectangle on the lower right corner to show 2 more types of info:

• The "TYPE" word could be replaced for a 4 letter word that indicates if the selected move is physical (PHYS), special (SPEC) or status (STAT) according to the split.
• The entire line "TYPE/type_name" could be of a different color according to the effectiveness of the selected move against the selected target. Green for x2 or more, Red for 1/2x or less, Black for 0x and statndard (Gray) for 1x

Describe alternatives you've considered

1. Don't do it
2. Implemment only one of the suggestions

Additional context

It seems that someone on the net has already implemented the type-effectiveness part. There is a tutorial HERE