Introduce value alias for cacheNames in @⁠CacheConfig

Prior to this commit @⁠CacheConfig did not have a `value` attribute
alias for `cacheNames`, even though the rest of the cache-related
annotations (such as @⁠Cacheable, @⁠CachePut, etc.) do have a `value` /
`cacheNames` alias pair.

To address that inconsistency, this commit introduces a `value` alias
for `cacheNames` in @⁠CacheConfig as well.

See gh-35096
Closes gh-35152

spring-context/src/main/java/org/springframework/cache/annotation/CacheConfig.java

@@ -22,6 +22,8 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import org.springframework.core.annotation.AliasFor;
+
 /**
  * {@code @CacheConfig} provides a mechanism for sharing common cache-related
  * settings at the class level.
@@ -39,6 +41,13 @@ import java.lang.annotation.Target;
 @Documented
 public @interface CacheConfig {
 
+	/**
+	 * Alias for {@link #cacheNames}.
+	 * @since 7.0
+	 */
+	@AliasFor("cacheNames")
+	String[] value() default {};
+
 	/**
 	 * Names of the default caches to consider for caching operations defined
 	 * in the annotated class.
@@ -47,7 +56,9 @@ public @interface CacheConfig {
 	 * configured {@link #cacheResolver()} which typically delegates to
 	 * {@link org.springframework.cache.CacheManager#getCache}.
 	 * For further details see {@link Cacheable#cacheNames()}.
+	 * @see #value
 	 */
+	@AliasFor("value")
 	String[] cacheNames() default {};
 
 	/**