Extend AllOf in order to support varargs for Matchers about cactoos-matchers

[0crat]

@llorllale/z please, pay attention to this issue

[llorllale]

@dgroup what do you mean "extend"? You want to create a new class that extends hamcrest's AllOf?

[dgroup]

@llorllale, yes

/**
 * ...
 */
public final class AllOf<T> extends org.hamcrest.core.AllOf<T> {
    /**
     * ...
     */
    public AllOf(final Matcher<? super T> ... matchers) {
        super(new IterableOf<>(matchers));
    }
}

Also we can write the own implementation of Matcher, but i think it will be overengineering for this case.

[llorllale]

@dgroup I think it would be better to provide a PR for hamcrest.

[dgroup]

@llorllale , initially the issue raised because i through

1. They already give this feature as Matchers.allOf(...) and available with hamcrest-all.
2. They promoting the usage of matchers through static methods annotated as @org.hamcrest.Factory, thus it already implemented, no need to add it to the hamcrest-core
3. There were no any releases since 2015 in maven central, so it will take months in order to receive such simple feature, however, i've checked today, and found that recently the've released the

   <dependency>
     <groupId>org.hamcrest</groupId>
     <artifactId>hamcrest</artifactId>
     <version>2.1</version>
   </dependency>

   https://mvnrepository.com/artifact/org.hamcrest/hamcrest/2.1
   Will try.

[0crat]

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[0crat]

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