Multi module artifact upload glob patterns

Hi,

Given a project with multiple sub-modules (50 directories), how can I specify an artifact upload pattern to upload all test reports, for the entire project, without having to specify each of the modules?

Currently it seems I have to specify each sub module as follows:

```yaml
artifact_paths:
- "module-a/build/reports/**/*"
- "module-b/build/reports/**/*"
- "module-c/build/reports/**/*"
....
....
- "module-x/build/reports/**/*"
```

Ideally I could specify something like:

```
artifact_paths:
- "**/build/reports/**/*"
- "**/build/coverage/**/*"
- "**/build/libs/**/*"
```

Which would pick up all artifacts under the reports, coverage and lib directories of all sub modules.

The issue names no file or test. Start by locating the Go agent code that handles artifact_paths and inspect how glob patterns are expanded. Done means recursive patterns such as **/build/reports/**/* select artifacts across all sub-modules without listing each module.

Written by the indexing model from the issue text.