libtest-warnings-perl: move from meta-perl

liburi-perl in oe-core now RDEPENDS on libtest-warnings-perl for ptest

* Update HOMEPAGE; fix syntax
* Add SUMMARY
* Add BUGTRACKER
* Use CPAN_MIRROR for SRC_URI
* Use actual LICENCE file for LIC_FILES_CHKSUM
* Add RDEPENDS
* Add RDEPENDS on perl-modules for ptest
  - Too many hidden dependencies that fail silently, but pass
    with full perl-modules
* Add self as maintainer
* Add to ptest-packagelists (fast)

Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>