Manpages of src:snek in Debian bullseye

• snek-board-install(1)
• snek-duemilanove-install(1)
• snek-itsybitsy-install(1)
• snek-mega-install(1)
• snek-uduino-install(1)
• snek-uno-install(1)
• snek(1)
• snekde(1)