Describe the bug
When setting the format output to JSON or JSON2 the ULOC calculations (when --uloc is set) are not in the output

To Reproduce

1. Run scc --uloc --format json
2. Look at the output: there is no ULOC metric (while it is there in other formats like csv)

Expected behavior
Add ULOC metric to JSON output format, similar as for CSV

Desktop (please complete the following information):

• OS: any
• Version any