Encapsulate Advisor Parameters with ChatMemoryAdvisorOptions

[dev-jonghoonpark]

Changes

This PR introduces the ChatMemoryAdvisorOptions class to encapsulate advisor parameters.

Background

Previously, CHAT_MEMORY_CONVERSATION_ID_KEY and CHAT_MEMORY_RETRIEVE_SIZE_KEY had to be referenced directly:

import static org.springframework.ai.chat.client.advisor.AbstractChatMemoryAdvisor.CHAT_MEMORY_CONVERSATION_ID_KEY;
import static org.springframework.ai.chat.client.advisor.AbstractChatMemoryAdvisor.CHAT_MEMORY_RETRIEVE_SIZE_KEY;

// ...

this.chatClient.prompt()
        .user(userMessageContent)
        .advisors(a -> a
                .param(CHAT_MEMORY_CONVERSATION_ID_KEY, chatId)
                .param(CHAT_MEMORY_RETRIEVE_SIZE_KEY, 100))
        .stream().content();

Improvements

By introducing ChatMemoryAdvisorOptions, the code is now more structured:

ChatMemoryAdvisorOptions options = ChatMemoryAdvisorOptions.builder()
        .conversationId(chatId)
        .retrieveSize(100)
        .build();

return this.chatClient.prompt()
        .user(userMessageContent)
        .advisors(options::applyTo)
        .stream().content();