## Why
The Rust GStreamer bindings link GLib's GIO library even when none of the selected plugins imports it. Following only plugin dependencies can omit a library the bindings need.
## What changed
- Export `gio-2.0` pkg-config metadata in the voice SDK.
- Require GIO as a runtime dependency root on Linux, macOS, and Windows, including its transitive dependencies under the existing import checks.
- Reject runtime packages that omit the required GIO library.
## Testing
Extend fixtures to cover GIO inclusion and missing-library rejection across platforms, loading GIO and its transitive dependency after moving a Linux runtime, and resolving `gio-2.0` through pkg-config after moving an SDK.
GitOrigin-RevId: d12e45d387d56c54d94d788cf07d82bb22c2b4a3
## What changed
Add `third_party/voice/sdk.py` to export headers, development libraries, and selected pkg-config metadata from an inspected native build. Verify shared libraries against inspection receipts and record the target, source commit, source manifest hash, and exported file hashes in `sdk.json`.
Enable relocatable Meson pkg-config metadata and materialize development library aliases. Reject mismatched receipts, paths escaping the build prefix, nonrelocatable metadata, and unsafe output locations; remove partial output on copy failure. Document SDK consumption as build inputs separate from packaged runtime files.
## Testing
Add tests for exported hashes and pkg-config resolution after moving the SDK and deleting the original prefix, alias materialization, invalid inputs, and cleanup after copy failure.
GitOrigin-RevId: 6d1575e659a02cd1f56e465e7830a296e8eaf486
