feat(nifti): Integrate NIFTI volume loader

[mbellehumeur]

• Added @cornerstonejs/nifti-volume-loader as a dependency.
• Registered NIFTI image loader in the initialization process.
• Implemented logic to load NIFTI image IDs and cache metadata in the display set handler.
• Introduced utility functions for URL handling to support NIFTI file paths.

Context

NIfTI Loader Support

Overview:
The NIfTI Loader feature allows the OHIF Viewer to load NIfTI images directly if a specific DICOM private tag contains a NIfTI URL. This is especially useful for hybrid datasets or research workflows.

How It Works

• Add the niftiPrivateTagName attribute to your data source configuration.
• When loading a study, the viewer checks for this private tag in the DICOM metadata.
• If the tag is present, the viewer loads the NIfTI file from the URL specified in the tag, bypassing standard DICOMweb retrieval.

Example Configuration

{
  "namespace": "@ohif/extension-default.dataSourcesModule.dicomweb",
  "sourceName": "jls",
  "configuration": {
    "friendlyName": "JLS Static WADO Server",
    "name": "jls",
    "wadoUriRoot": "http://localhost:5001/dicomweb",
    "qidoRoot": "http://localhost:5001/dicomweb",
    "wadoRoot": "http://localhost:5001/dicomweb",
    "niftiPrivateTagName": "00090010"
  }
}

Key Option Explained:

• niftiPrivateTagName:
  The DICOM private tag (in group/element format, e.g., "00090010") where the NIfTI URL is stored.

Behavior:
If a DICOM instance contains this private tag, the viewer will use the URL from the tag to load the NIfTI file, bypassing standard DICOMweb image retrieval.

---

Summary

• Subresolution:
  Use imageRetrieveOptions to customize how frames/volumes are retrieved from your DICOMweb server, including progressive loading and custom frame paths.
• NIfTI Loader:
  Use niftiPrivateTagName to enable direct loading of NIfTI files via a DICOM private tag.

Changes & Results

Testing

Checklist

PR

• [] My Pull Request title is descriptive, accurate and follows the
  semantic-release format and guidelines.

Code

• [] My code has been well-documented (function documentation, inline comments,
  etc.)

Public Documentation Updates

• [] The documentation page has been updated as necessary for any public API
  additions or removals.

Tested Environment

• [] OS:
• [] Node version:
• [] Browser:

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