assistant2: Factor out tool use into its own module (#25819)

This PR factors out the concerns related to tool use out of `Thread` and
into their own module.

Release Notes:

- N/A

Marshall Bowers committed 1y ago

fc52b43159435f02b6f3108fa54e0cd0e483bd61

Parent: b445e4c

Committed by GitHub <noreply@github.com> on 2/28/2025, 5:04:20 PM