Add games/suika3: Portable 2D game engine with visual novel DSL

[awemorris]

Add new package: games/suika3

Suika3 is a cross-platform, high-performance 2D game engine focused on visual novels.
It is written in C89 and designed for maximum portability across architectures supported by NetBSD.

Features:

• C89-based portable 2D game engine core
• Built-in DSL for visual novel scripting
• Custom JIT and AOT scripting VM supporting amd64, arm64, riscv64, and more
• Cross-platform architecture with mobile app support
• Uses OpenGL if available
• Software rendering fallback for X11 (1/8/16/24/32-bpp)
• Supports older UNIX systems such as Solaris 10

JIT-supported architectures:

• x86 / amd64
• ARM (v5–v8)
• RISC-V (32/64)
• MIPS (32/64)
• PowerPC (32/64)

Packaging notes:

• Uses CMake build system
• Optional features controlled via pkgsrc options
• Depends on noto-fonts for font rendering in the sample game
• Supports optional OpenGL and GStreamer backends

Tested on:

• NetBSD 10.1 amd64
• pkgsrc-current (git)

Homepage:
https://github.com/awemorris/suika3