Add spring-configuration-metadata

- Adding boot's annotation processor to spring-shell-autoconfigure
  and spring-shell-test-autoconfigure
- Backport #948
- Fixes #950

buildSrc/src/main/java/org/springframework/shell/gradle/ManagementConfigurationPlugin.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 the original author or authors.
+ * Copyright 2022-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,6 +47,7 @@ public class ManagementConfigurationPlugin implements Plugin<Project> {
 			PluginContainer plugins = project.getPlugins();
 			plugins.withType(JavaPlugin.class, (javaPlugin) -> {
 				configurations.getByName(JavaPlugin.IMPLEMENTATION_CONFIGURATION_NAME).extendsFrom(management);
+				configurations.getByName(JavaPlugin.ANNOTATION_PROCESSOR_CONFIGURATION_NAME).extendsFrom(management);
 			});
 			plugins.withType(JavaTestFixturesPlugin.class, (javaTestFixturesPlugin) -> {
 				configurations.getByName("testFixturesCompileClasspath").extendsFrom(management);

spring-shell-autoconfigure/spring-shell-autoconfigure.gradle

@@ -11,4 +11,5 @@ dependencies {
 	implementation project(':spring-shell-standard')
 	implementation project(':spring-shell-standard-commands')
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
 }

spring-shell-test-autoconfigure/spring-shell-test-autoconfigure.gradle

@@ -18,4 +18,5 @@ dependencies {
 	optional 'org.assertj:assertj-core'
 	optional 'org.junit.jupiter:junit-jupiter-api'
 	testImplementation 'org.awaitility:awaitility'
+	annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
 }