Update Spring AI dependencies to 1.0.0-SNAPSHOT (#21)

- Update Spring AI version from 1.0.0-M5 to 1.0.0-SNAPSHOT across all modules
- Update artifact IDs to match new naming convention (spring-ai-*-spring-boot-starter → spring-ai-starter-model-*)
- Add central-portal-snapshots repository to all projects for SNAPSHOT dependency resolution
- Standardize repository URLs to use repo.spring.io/milestone instead of libs-milestone-local
- Remove the obsolete spring-ai-core dependency in Kotlin modules
- Update QuestionAnswerAdvisor import path in rag-with-kotlin
- Reorganize root POM module ordering for better organization

Signed-off-by: Soby Chacko <soby.chacko@broadcom.com>

misc/spring-ai-java-function-callback/pom.xml

@@ -28,7 +28,7 @@
 	</scm>
 	<properties>
 		<java.version>17</java.version>
-		<spring-ai.version>1.0.0-M5</spring-ai.version>
+		<spring-ai.version>1.0.0-SNAPSHOT</spring-ai.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -37,7 +37,7 @@
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.ai</groupId>
-			<artifactId>spring-ai-openai-spring-boot-starter</artifactId>
+			<artifactId>spring-ai-starter-model-openai</artifactId>
 		</dependency>
 
 		<dependency>
@@ -51,7 +51,7 @@
 			<dependency>
 				<groupId>org.springframework.ai</groupId>
 				<artifactId>spring-ai-bom</artifactId>
-				<version>1.0.0-M5</version>
+				<version>1.0.0-SNAPSHOT</version>
 				<type>pom</type>
 				<scope>import</scope>
 			</dependency>
@@ -83,6 +83,17 @@
 				<enabled>false</enabled>
 			</snapshots>
 		</repository>
+		<repository>
+			<id>central-portal-snapshots</id>
+			<name>Central Portal Snapshots</name>
+			<url>https://central.sonatype.com/repository/maven-snapshots/</url>
+			<releases>
+				<enabled>false</enabled>
+			</releases>
+			<snapshots>
+				<enabled>true</enabled>
+			</snapshots>
+		</repository>
 	</repositories>
 	<pluginRepositories>
 		<pluginRepository>
@@ -95,4 +106,4 @@
 		</pluginRepository>
 	</pluginRepositories>
 
-</project>
+</project>