Spring-ai Add builder pattern and order parameter to advisors

• Introduce builder pattern for MessageChatMemoryAdvisor, PromptChatMemoryAdvisor, QuestionAnswerAdvisor, SafeGuardAdvisor, and VectorStoreChatMemoryAdvisor.
• Add 'order' parameter to control advisor execution priority
• Modify constructors to include the new 'order' parameter
• Update AbstractChatMemoryAdvisor to support the new 'order' parameter

Comment From: markpollack

merged in 13709f9542d6bb016a84cbc5445a07f4e1b968f0