New Example: Add retry logic for failed LLM calls and tool executions

[pguso]

Implement configurable retry mechanisms with exponential backoff for transient failures in API calls and tool executions.

Should include max retry counts, timeout handling, and retry strategies for different error types.

[LifeHashed]

@pguso I would like to add the retry with exponential backoff to the llm failed calls.

[pguso]

You are very welcome @LifeHashed

[LifeHashed]

@pguso please check the PR

[LifeHashed]

@pguso please check the PR