Soko Striker v1.0.5 update

Changelog:

• Reduced animation speed of button prompt icons, aimed to reduce distraction of bottom right icons.
• Added new hotkey (H) to show/hide bottom right UI (restart, music and fullscreen button prompts).
• Increased movement speed of player character from 1.75 tiles/second to 2.0 tiles/second.
• Increased movement speed of balls from 3.5 tiles/second to 4.0 tiles/second.