MODLD-998: Create TitleLabelGenerator

[pkjacob]

No description provided.

[Copilot]

Pull request overview

Adds support for generating human-readable labels for Title-like resources (Title/Variant/Parallel/Abbreviated) based on structured title properties in the resource doc, and refactors shared JSON-property extraction into a helper.

Changes:

• Introduces TitleLabelGenerator to build a label from mainTitle, subTitle, partNumber, and partName.
• Extracts reusable JSON doc property lookup into LabelHelper and reuses it in HubLabelGenerator.
• Registers the new generator in LabelGeneratorService and adds unit tests covering spacing/missing-property behavior.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/test/java/org/folio/ld/dictionary/label/TitleLabelGeneratorTest.java	Adds tests verifying title label composition and spacing behavior.
src/main/java/org/folio/ld/dictionary/label/generators/TitleLabelGenerator.java	Implements title label generation by joining available title properties.
src/main/java/org/folio/ld/dictionary/label/generators/HubLabelGenerator.java	Refactors property extraction to use the shared helper.
src/main/java/org/folio/ld/dictionary/label/LabelHelper.java	Adds shared helper for reading the first string value from a JSON doc property.
src/main/java/org/folio/ld/dictionary/label/LabelGeneratorService.java	Registers TitleLabelGenerator in the generator chain.

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

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[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated no new comments.

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