Move the emulator into crates/gba-core, the original demo programs into
crates/gba-demos, and the minifb frontend into crates/desktop. The binary
is now gameboy-rust. Imports change from gba_rust to gba_core/gba_demos;
no behavior changes.
gba-core has no dependencies. Its integration tests use gba-demos as a
development dependency.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Execute BgAffineSet and ObjAffineSet through original ARM routines with a mathematically generated sine table. Preserve caller state, validate record spans and strides, and use normal bus writes for background registers and sprite matrices.
Add independent matrix/origin references, all-phase coverage, rendering integration, diagnostics, stack and DMA checks. Extend image construction with multiple literal pools and reserved table bounds. Document formats and compatibility limits.
Validated on Darwin arm64: 694 default and 683 core-only tests in debug and release; formatting, Clippy, rustdoc, ten native window smoke tests, and CPU/timer demos pass.
