Feature Request: Co-locate Bazel Generated Files with targets

[sebastianv1]

Curious how difficult it might be to co-locate the generated files (i.e genrule or swift_proto_compile sources) under the target's group in Xcode?

For example, in addition to the top-level group Bazel Generated Files there could be a generated files group for a target package.

.
└── Modules/
    ├── Foo/
    │   ├── Sources/
    │   │   └── Baz.swift
    │   └── Bazel Generated/
    │       ├── <config_ios15>/
    │       │   └── File_Genrule_Generated.swift
    │       └── <config_ios16>/
    │           └── File_Genrule_Generated.swift
    └── Proto/
        ├── proto/
        │   └── test.proto
        └── Bazel Generated/
            └── test.pb.swift  

I've abbreviated the true output_base paths for brevity (but noted multiple potential configurations for a generated file with the config_ios15 and config_ios16).

Unsure if this is really feasible, but thought I'd ask since it can currently be a bit tricky to find generated files in Xcode to inspect their contents.