Pod improvements, add PodWeaver plug-in to dist.ini

Add more items to SEE ALSO section and remove NAME section which is now
handled by PodWeaver (which also adds a COPYRIGHT and AUTHORS section to
the module on build).
Use https:// for homepage, git:// for repository.url

This avoids a redirect and might enable the 'Repository' menu item on
MetaCPAN.
Add Git::Tag plugin to dist.ini

This automates tagging when doing a release.
Add two release plugins to create and execute Pod tests
Add MetaJSON plugin to create a META.json file