Remove circular dependencies:
Move utility classes from various packages to dedicated support packages:
- Move ToolCallbacks from ai.tool to ai.support
- Move UsageUtils to UsageCalculator in ai.support
- Move tool.util to tool.support
- Create new ToolDefinitions utility class
Support packages for the classes in question is more idomatic in spring than util packages.
Signed-off-by: Mark Pollack <mark.pollack@broadcom.com>