Hotkeys and shortcuts for VisualBoyAdvance-M

`← ↑ → ↓`	General controls Arrow buttons
`Z`	General controls A button
`X`	General controls B button
`A`	General controls L button
`S`	General controls R button
`⤶ Enter`	General controls Start button
`⬅ Backspace`	General controls Select button
`Space`	General controls Speed up
`F12`	General controls Capture