Add support for deleteBy/removeBy queries

Since 2014, core Spring Data JPA has supported deleteBy/removeBy in queries, just like findBy queries. However, Spring Data Redis does not support this, instead throwing

java.lang.UnsupportedOperationException: Query method not supported.
	at org.springframework.data.keyvalue.repository.query.KeyValuePartTreeQuery.doExecute(KeyValuePartTreeQuery.java:144)
	at org.springframework.data.keyvalue.repository.query.KeyValuePartTreeQuery.execute(KeyValuePartTreeQuery.java:110)
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137)
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121)
	at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:159)
	at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:138)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)
	at com.sun.proxy.$Proxy115.deleteByRecordingSid(Unknown Source)

I would like to request that deleteBy (and its synonym removeBy) be supported in queries.

Code Example

@RedisHash("Student")
public class Student {

    @Id
    private String id;
    @Indexed
    private String name;

    // Getters and setters
}

@Repository
public interface StudentRepository extends CrudRepository<Student, String> {

    Student findByName(String name);

    void deleteByName(String name);
}

studentRepository.findByName("John Doe"); // Successful
studentRepository.deleteByName("John Doe"); // UnsupportedOperationException

Start with org.springframework.data.keyvalue.repository.query.KeyValuePartTreeQuery.java at doExecute, the entry point named in the stack trace, and compare its handling with the StudentRepository example. Done means derived deleteBy and removeBy methods execute successfully and remove matching Redis entities instead of throwing UnsupportedOperationException.