feat: Add run Method, Change create Params

[maticzav]

This PR adds a new method run that creates a new function and awaits completion. Additionally, this PR changes the create method structured output parameter to schema.

[delve-auditor]

✅ No security or compliance issues detected. Reviewed everything up to fef5379.

Security Overview

• 🔎 Scanned files: 6 changed file(s)

Detected Code Changes

Change Type	Relevant files
Enhancement	► examples/run-zod.ts     Add new example with Zod schema ► examples/run.ts     Add new basic run example ► src/lib/parse.ts     Update schema parameter naming ► src/resources/tasks.ts     Add run method implementation ► examples/stream-zod.ts     Update schema parameter ► examples/zod.ts     Update schema parameter

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