Adding ROIs to Parsed Metadata

[simonwarchol]

Addressing #913

Background

This PR adds ROI (Region of Interest) functionality to Viv by extending the OME-XML parsing logic.
With this change, ROI elements defined in OME-XML can be extracted and made available in Viv’s data model, allowing downstream tools to render and interact with ROI annotations.

Change List

• Added ROI parsing support in the OME-XML parser.
• Extended types/interfaces to include ROI data structures.
• Updated documentation to note ROI support.

Checklist

• Update JSdoc types if there is any API change.
• Make sure Avivator works as expected with your change.

[dbmi-svc-checkmarx]

Checkmarx One – Scan Summary & Details – b68e7ada-a4d3-4f28-b33a-2c3431306afd

Great job! No new security vulnerabilities introduced in this pull request

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