This separates it from `libSwiftScan` and allows us to build this library without building much of the rest of the compiler.
Also refactor `utils/build-parser-lib` into `utils/build-tooling-libs` which builds both SwiftSyntaxParser and SwiftStaticMirror.
This commit adds new entry-points to `libSwiftScan` that operate on the new BinaryScanningTool, which reads out Swift type information from object files, starting with a query of all protocol conformances.
Adds a C API layer consisting of:
- Data structures used to represent in-memory result of dependency scanning
- Opaque dependency scanner tool (C wrapper for `DependencyScanningTool`)
Refactors `ScanDependencies.cpp` to produce dependency scanning result in the form of the above binary format.
