post-process: split scancode JSON result (or other output) into multiple files by leading path or number of directory components.

## Short Description

Sometimes I get very large scancode result files (in JSON) where it would be a lot easier to split into more logical components. A feature that would allow me import a result file and then write multiple result files (each with a subset of the results) could be useful.

As an example, say I have a file that has scanned files in directories:

```
a/
b/
c/
```

and that all of the results are in a single result file but that I would want to split the data in three different result files.

## Possible Labels

- new feature

## Select Category

- [X] Enhancement
- [ ] Add License/Copyright
- [ ] Scan Feature
- [ ] Packaging
- [ ] Documentation
- [ ] Expand Support
- [ ] Other

## **Describe the Update**

Splitting a scancode result file into multiple files.

## **How This Feature will help you/your organization**

It allows me to work around suboptimal choices others have made.

## **Possible Solution/Implementation Details**

## **Example/Links if Any**

## **Can you help with this Feature**