Add toggle to switch between summary and YAML view in JobDialog

[Nidhi1314]

closes #138

Summary:
This PR adds a toggle button in the JobDialog to switch between a concise summary view and the full YAML view of a job.

Changes:

• Introduced a toggle control (“Summary View” / “YAML View”) in the job detail dialog.
• Summary view displays essential job details for quick reference.
• YAML view shows the complete job specification in YAML format.

Testing:

• Toggle switches smoothly between summary and YAML views.
• Key information is correctly displayed in summary view.

Why this matters:

• Improves user experience by providing immediate insights without needing to parse YAML.
• Gives flexibility to see detailed configuration when needed.

Screenshots:

Summary View:

YAML View:

[volcano-sh-bot]

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[de6p]

Thank you for your contribution! We're moving to a new interface for the Volcano Dashboard very soon. You can check the progress here — a brand-new UI is on the way.
// @Monokaix