Add Support for PowerA GameCube Style Wired Controller for Nintendo Switch (controller ini in description)

[ThunderousEcho]

[PowerA GameCube Style Wired Controller for Nintendo Switch]
VID=20D6
PID=A711
Polltype=1
DPAD=1
DigitalLR=1
A=0,04
B=0,02
X=0,08
Y=0,01
ZL=0,10
Z=0,20
L=0,40
R=0,80
S=1,02
Left=2,06
Down=2,04
Right=2,02
Up=2,00
RightUp=2,01
DownRight=2,03
DownLeft=2,05
UpLeft=2,07
StickX=3
StickY=4
CStickX=5
CStickY=6
Power=1,10

As far as I can tell, this controller doesn't have rumble.

This config maps plus to start and home to power- if that's not consistent with other controllers and needs to be changed, I also have the following notes:
Minus: 1,01
Capture: 1,20
Home: 1,10
Plus: 1,02