Auto PIN entry (#272)

## Link to GitHub Issue, if one exists
Fixes https://github.com/spice2x/spice2x.github.io/issues/193

## Description of change
Merges guardianblue's changes plus some code review feedback.

Adds the ability to automatically type out the digits of a PIN when an
overlay shortcut is pressed.

## Compiling
💯 

## Testing
Tested:
* 32 bit popn
* TDJ, 1p/2p
* KFC, UFC

src/spice2x/games/io.h

@@ -22,6 +22,8 @@ namespace games {
             ToggleScreenResize,
             ToggleOverlay,
             ToggleCameraControl,
+            TriggerPinMacroP1,
+            TriggerPinMacroP2,
             ScreenResize,
             ScreenResizeScene1,
             ScreenResizeScene2,