[FEATURE] support tool input examples

[abhiaiyer91]

Problem Statement

Anthropic supports tool input examples, other providers can put this in tool descriptions

Proposed Solution

Support tool input examples

Component

Tools

Alternatives Considered

No response

Example Use Case

aisdk providers support this

Additional Context

No response

Verification

• I have searched the existing issues to make sure this is not a duplicate
• I have provided sufficient context for the team to understand the request