FGO: add keyboard input (#61)

Probably self-explanatory :p

Reviewed-on: TeamTofuShop/segatools#61
Co-authored-by: kyoubate-haruka <46010460+kyoubate-haruka@users.noreply.github.com>
Co-committed-by: kyoubate-haruka <46010460+kyoubate-haruka@users.noreply.github.com>

dist/fgo/segatools.ini

@@ -158,8 +158,11 @@ coin=0x72
 ;   : :                                      AIME.   : :
 ;   '·:..............................................:·'
 ;
-; Only XInput is currently supported.
 
+; Select the input mode. "xinput" for controller, "keyboard" for keyboard.
+mode=xinput
+
+[xinput]
 ; XInput bindings 
 ;
 ; Left Stick           Joystick
@@ -168,3 +171,27 @@ coin=0x72
 ; Left Shoulder        Switch Target
 ; A/B                  Attack
 ; X/Y                  Noble Phantasm
+
+; Configure deadzones for the left thumbsticks.
+; The default value for the left stick is 7849, max value is 32767.
+stickDeadzone=7849
+
+[keyboard]
+; Keyboard bindings:
+
+; Stick controls (default: WASD)
+up=0x57
+left=0x41
+down=0x53
+right=0x44
+
+; Attack (default: Space)
+attack=0x20
+; Dash (default: LSHIFT)
+dash=0xa0
+; Change Target (default: J)
+target=0x4A
+; Re-center camera (default: K)
+camera=0x4B
+; Noble Phantasm (default: L)
+np=0x4C