This update makes it easier to handle agent deployments without writing manual polling loops.

• Added waitForDeployment() → polls until an agent’s deployment is STATUS_RUNNING, with configurable timeout and interval.
• Added createAndWait() → creates an agent and automatically waits for it to finish deploying.
• Handles failure states (STATUS_FAILED, STATUS_UNDEPLOYMENT_FAILED, STATUS_DELETED) and timeouts cleanly.
• Added optional WaitForDeploymentOptions (intervalMs, timeoutMs, throwOnFailure).

issue #4