Add global 'tools' repository for agent written tools

[double16]

What problem does this solve?

The agent is allowed to write new tools. Those tools may have value beyond the target.

Proposed solution

1. Add a global directory for custom tools
2. Add a way to discover and load the tools. Strands already supports runtime loading of tools.
3. Provide a evaluator of custom tools before promoting to global.

Some things that could go wrong:

1. Target specific domain/IP addresses
2. Target specific data
3. ???

Alternatives considered

No response

Which area does this affect?

None