Resolves https://github.com/spring-projects/spring-ai/issues/832
Introduces retry functionality to VertexAI embedding and
chat models, enhancing their resilience against transient failures.
It also corrects a typo in the VertexAiEmbeddingConnectionDetails
class name.
Key changes:
* Add RetryTemplate to VertexAiTextEmbeddingModel and VertexAiGeminiChatModel
* Introduce spring-ai-retry dependency
* Refactor code to support retry logic
* Update auto-configuration classes to incorporate retry functionality
* Fix typo in VertexAiEmbeddingConnectionDetails class name
remove extraneous commented out code
Add missing copyright headers, author etc.
bb88e2f2de