* build: Rework CI and move all bundling into new build target.
* ci: Use "mingw" in msys2 release names for compatibility.
* ci: Use "osx" in macOS release names for compatibility.
* ci: Disable macOS upload.
Will be moved to a separate PR for canary merge.
* ci: Build macOS for different architectures separately.
* ci: Combine macOS builds into universal binary.
* ci: Disable uploading final macOS artifacts until ready to resume producing.