Add report column builder

[zgeorgiev-smartsheet]

Pull Request

Summary

Adds ReportColumn.AddReportColumnBuilder - a fluent builder for constructing ReportColumn objects when adding columns to a report. The builder enforces required fields (title and type), throwing InstantiationError if either is missing at build time.

Summary by CodeRabbit

• New Features
  • Added a fluent builder for creating report columns with configurable titles, types, ordering, options, symbols, system column settings, auto-number format, width, primary flag, formatting, validation, and sheet-name behavior.
  • Added validation so required column details (title and type) must be provided before a column can be created.
• Tests
  • Added unit test coverage for builder configuration, defaults, and required-field validation.
  • Updated existing report-column test setup to use the new builder.
• Documentation
  • Updated the Unreleased changelog to mention the new builder.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 4fc612fa-3ddd-48e3-acd7-c2b7f24c6955

📥 Commits

Reviewing files that changed from the base of the PR and between 86ffff3 and bc7d5a0.

📒 Files selected for processing (1)

• CHANGELOG.md

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📝 Walkthrough

Walkthrough

Adds ReportColumn.AddReportColumnBuilder with required-field validation, tests its property mapping and defaults, adopts it in report column test setup, and documents the addition.

Changes

Report column construction

Layer / File(s)	Summary
ReportColumn builder implementation src/main/java/com/smartsheet/api/models/ReportColumn.java	Adds a fluent builder for report column properties and throws InstantiationError when title or type is missing.
Builder validation and adoption src/test/java/com/smartsheet/api/models/ReportColumnTest.java, src/test/java/com/smartsheet/api/sdktest/reports/TestAddReportColumns.java, CHANGELOG.md	Tests populated values, default sheet-name behavior, and required-field failures; report setup uses the builder and the changelog documents it.

Estimated code review effort: 3 (Moderate) | ~20 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description has a summary, but it omits the required checklist and any issue or task reference.	Add the checklist items from the template, and include a task or issue link if one exists.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding a report column builder.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch add-report-column-builder-to-sdk

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