AoG and general fixes

• Added support of AoG v1.0/v2.0/v3.0
• Added option to stretch rendered image to window
• Improved audio and video performance
• Disabled weapon bobbing in AoG
• Handle game closing by pressing window's "close" button
• Fixed palette updating for software rendering
• Fixed viewport for software rendering
• Fixed barriers operating on another floor
• Fixed barriers operating message
• Fixed player's gun hit scan
• Fixed crates with green and gold keys
• Fixed Genetic Guard death sound
• Fixed push wall crash on E3M2 at (16, 50)
• Fixed uncleaned input state on gaining/loosing input focus
• Fixed missing toggle heartbeat sounds by key
• Fixed crash by a dummy switch on E2M1 at (35, 61)
• Fixed Star Trooper death and faint sounds
• Fixed indestructible Projection Generators on E6M9
• Fixed total enemy count on E6M9
• Fixed paused audio on inactive/minimized window
• Fixed music toggle by key when enabling official cheat (J+A+M+Enter)