[DOCS] Provide alternative way to apply Guardrail #204
Description
Documentation Section
https://strandsagents.com/latest/documentation/docs/user-guide/safety-security/guardrails/
Current State
Customer request notify-only model for Guardrail.
Suggested Improvement
Proposed Approach: Add Hooks to before& after model invocation.
Rationale
Customer request
Additional Context
https://docs.aws.amazon.com/bedrock/latest/APIReference/API_runtime_ApplyGuardrail.html