Replace spring-ai-client-chat dependency with spring-ai-model in model implementations
and memory repositories, and with spring-ai-commons in document readers. This change
improves the dependency structure by having components depend on the appropriate
abstraction level.
Additional changes:
- Add slf4j-api dependency to pdf-reader and spring-ai-retry
- Move spring-ai-client-chat to test scope in spring-ai-ollama
- Fix XML formatting in some pom.xml files
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>