This package aliases misc/codegen providing the Swift-specific options
in swift/codegen.conf.
Running bazel run //swift/codegen will generate all checked in
files (dbscheme, QL generated code,
generated QL stubs, generated QL tests).
C++ code is generated during build (see swift/extractor/trap/BUILD.bazel). After a
build you can browse the generated code in bazel-bin/swift/extractor/trap/generated from the root of the codeql
repository.