Redundant nested `GeneratedBy` key in JSON sidecar

[valosekj]

#105 probably introduced a bug causing redundant nested GeneratedBy key:

    "SpatialReference": "orig",
    "GeneratedBy": [
        {
            "GeneratedBy": [

[NathanMolinier]

Hey Jan ! I just noticed this issue and previous PR #105.

Why don't we merge the generated by information ?

Current:

{
    "SpatialReference": "orig",
    "GeneratedBy": [
        {
            "GeneratedBy": [
                {
                    "Name": "spinalcordtoolbox: sct_deepseg -task seg_sc_contrast_agnostic -i sub-05_T2w.nii.gz -qc qc -qc-subject sub-05",
                    "Version": "git-master-64f55fdf022659db5d5c779f01c605d91ca7d052",
                    "CodeURL": "https://github.com/spinalcordtoolbox/spinalcordtoolbox/blob/64f55fdf022659db5d5c779f01c605d91ca7d052/spinalcordtoolbox/scripts/sct_deepseg.py",
                    "ModelURL": "https://github.com/sct-pipeline/contrast-agnostic-softseg-spinalcord/releases/download/v2.5/model_contrast-agnostic_20240930-1002.zip"
                }
            ]
        },
        {
            "Name": "Manual",
            "Author": "Jan Valosek",
            "Date": "2024-12-10 18:05:31"
        }
    ]
}

Suggestion:

{
    "SpatialReference": "orig",
    "GeneratedBy": [
        {
            "Name": "spinalcordtoolbox: sct_deepseg -task seg_sc_contrast_agnostic -i sub-05_T2w.nii.gz -qc qc -qc-subject sub-05",
            "Version": "git-master-64f55fdf022659db5d5c779f01c605d91ca7d052",
            "CodeURL": "https://github.com/spinalcordtoolbox/spinalcordtoolbox/blob/64f55fdf022659db5d5c779f01c605d91ca7d052/spinalcordtoolbox/scripts/sct_deepseg.py",
            "ModelURL": "https://github.com/sct-pipeline/contrast-agnostic-softseg-spinalcord/releases/download/v2.5/model_contrast-agnostic_20240930-1002.zip"    
        },
        {
            "Name": "Manual",
            "Author": "Jan Valosek",
            "Date": "2024-12-10 18:05:31"
        }
    ]
}

Having multiple level is really complex to understand and analyze

[valosekj]

Hey @NathanMolinier. Yes, this is precisely what #109 is fixing! Sorry, I didn't have time yesterday to properly describe the PR. I updated it description rn.

[NathanMolinier]

No problem ahah now I understand thanks !