[WIP] Add endpoint to list jobs with filters

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Create an issue in 0xprathamesh/agent-execution-engine to List jobs (with filters).
Goal: GET /api/v1/job/jobs returns a list of jobs, with optional filters.
Behaviour : * Query params (all optional): status, type, limit, offset.

• Example: GET /api/v1/job/jobs?status=QUEUED&type=AGENT_TASK&limit=20&offset=0
• Response: { jobs: JobResponse[], total: number } (or a simple { jobs: JobResponse[] } .

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