Added a new shortcut key to interact with buildings, and also display the shortcut keys on several buttons in the UI.

You can also select seeds, meals,  scuba station, crafting options etc with shortcut keys 1~9 now.

Full changelog:

Features:

• Display shortcut keys over building buttons
• Added shortcut keys to recipe buttons (e.g. farm seeds, cookhouse dishes)
• Added 'E' as a shortcut key to interact
• Added resource icons to building buttons
• Added tooltips to show shortcuts to harvest and insert into buildings

Balancing:

• Expansion research now uses Raw Mineral Ore instead of Minerals