[MNT] Add example scripts for creating data dictionary + graph data JSON schema

[alyssadai]

Changes proposed in this pull request:

• Add standalone Python scripts for creating JSON schema from our Pydantic models

Checklist

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• PR has an interpretable title with a prefix ([ENH], [FIX], [REF], [TST], [CI], [MNT], [INF], [MODEL], [DOC]) (see our Contributing Guidelines for more info)
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• Tests pass
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For new features:

• Tests have been added

For bug fixes:

• There is at least one test that would fail under the original bug conditions.

Summary by Sourcery

New Features:

• Add standalone Python scripts for creating JSON schema from Pydantic models.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request introduces two new scripts that generate JSON schemas for the Neurobagel data dictionary and graph data models. These scripts use the Pydantic models to create the schemas and output them to JSON files.

Sequence diagram for JSON schema generation

sequenceDiagram
    participant Script
    participant PydanticModel
    participant FileSystem
    Script->>PydanticModel: model_json_schema()
    PydanticModel-->>Script: JSON schema
    Script->>FileSystem: Write schema to file
    Note over Script,FileSystem: Writes formatted JSON with indent=2

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Flow diagram for JSON schema generation process

graph TD
    A[Pydantic Models] --> B[generate_dictionary_jsonschema.py]
    A --> C[generate_graphdata_jsonschema.py]
    B --> D[neurobagel_datadictionary.schema.json]
    C --> E[neurobagel_graphdata.schema.json]
    subgraph Models
    F[DataDictionary Model] -.-> A
    G[Dataset Model] -.-> A
    end

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File-Level Changes

Change	Details	Files
Added a script to generate a JSON schema for the Neurobagel graph data model.	Created a new Python script. Imported the necessary libraries. Used the Dataset model to generate the JSON schema. Output the schema to a JSON file.	generate_graphdata_jsonschema.py
Added a script to generate a JSON schema for the Neurobagel data dictionary model.	Created a new Python script. Imported the necessary libraries. Used the DataDictionary model to generate the JSON schema. Output the schema to a JSON file.	generate_dictionary_jsonschema.py

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.55%. Comparing base (62cbad8) to head (07dcf91).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #427   +/-   ##
=======================================
  Coverage   98.55%   98.55%           
=======================================
  Files          18       18           
  Lines        1109     1109           
=======================================
  Hits         1093     1093           
  Misses         16       16           

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