Switch to Moo.

I want to port Git::PurePerl Moo.
(ref. https://rt.cpan.org/Public/Bug/Display.html?id=73966)

But Git::PurePerl depends on Config-GitLike, using Any::Moose.

I propose switch to Moo.

Note. Any::Moose is deprecated. https://metacpan.org/module/Any::Moose