jtcop support

[volodya-lombrozo]

Currently several tests violate test best practices:

        MatcherAssert.assertThat(
            new Jhome().path().toFile().exists(),
            Matchers.is(true)
        );

I suggest to add jtcop plugin to that library.

[volodya-lombrozo]

@yegor256 What do you think?

[yegor256]

@volodya-lombrozo sure, let's do it!