Engine components (not an app release)

Binary components that Highball's engine manifest pins by URL and SHA-256. This is not an app release; app releases carry a version number and ship through the appcast.

• moltenvk-1.4.1-shadow-import-1-x86_64.tar.gz: MoltenVK 1.4.1 rebuilt with moltenvk-shadow-import.patch (Apache-2.0, source: https://github.com/KhronosGroup/MoltenVK/tree/v1.4.1), x86_64 only, for the moltenvk component of engine x64-sikarugir10.0_6-r1. Reproducible with Scripts/build-moltenvk.sh v1.4.1 in the Highball repo. What it changes: with MVK_SHADOW_IMPORT=1 in a launch's environment, host memory that Wine imports for 32-bit games is backed by a normal Metal buffer synced on every queue submission instead of a no-copy view, which is what makes The Sims Legacy Collection render on Apple Silicon (highball-db #7). Off by default.