Raspberry Pi 5 & 4, Raspbian 12 (Bookworm) - arm64 support

[cklosters]

• Adds support for the Raspberry Pi 5 & 4, running arm64 Raspbian 12 (Bookworm, 64 bit).
• Removes support for armhf Raspbian 11 (Buster, 32 bit).
  • Deleted all armhf dependencies, kept cmake directives
• Updated CMake for arm64
• Recompiled python for arm64, GCC 12
• Added raspberry pi model check to disable unsupported features for PI4 (cmake)
• Updated SDL2 to latest stable version arm64
• Updated readme
• Added direct build scripts for napkin