telemetry(amazonq): toolUseSuggested

[chungjac]

Problem

• Want to see the distribution of tools that LLM either used directly (no acceptance needed) or suggested (user acceptance required)

Solution

• Add metric toolUseSuggested

Notes

• This only takes into account what tool the LLM uses/suggests. This does not take into account whether that tool was actually accepted/rejected.
  • This is because a user can accept/reject at a later time, or even ignore. For example, a generated shell command can be rejected 30 minutes later or dozens of messages later in the conversation.
  • The goal is to possibly streamline this, likely with the amazonq_interactWithAgenticChat metric
• For now, we want info in the distribution of tools that LLM uses/suggests

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.