Add more visibility into how Agent performed when called as a tool

**Is your feature request related to a problem? Please describe.**
When we tag the Agent as a tool to a parent or root agent, it becomes very hard to follow up on what tools within the _`agent_as_a_tool`_ agent were called, through Web UI.

**Describe the solution you'd like**
Through some mechanism, add logging in the sub-agent, also when added as a tool.

**Describe alternatives you've considered**
Nothing tried as of now.