Add pattern support for `about_resource` field?

> Now we are using patterns to map to deployed resource paths, and this is also different from the about_resource field in the ABOUT spec as this is resources in the deployed side, and not present side-by-side in the devel codebase. We are currently using about_resource temporarily to have these patterns, until this spec change is accepted. But this is incorrect both because of the above reason, and that the about_resource spec does not support patterns for now.

https://github.com/aboutcode-org/aboutcode-toolkit/pull/539#issuecomment-1782270839

@pombredanne @AyanSinhaMahapatra

What’s the current status, and what plan/change needs to be made?
At present, the `about_resource` field is designed to reference a single resource (file or directory) at a time.

Should we introduce a new field to support patterns for `about_resource` on the deployed side, or should we extend the existing `about_resource` field to include pattern support