Add GitHub Actions

[szabgab]

to run the tests on every push
I disabled Windows as one of the dependencies was failing. If it is important it can be enabled later.

I am sending this as part of my Daily CI project

[szabgab]

The one I saw was with Net::IP::Match::Trie: https://github.com/szabgab/Plack-Middleware-Greylist/actions/runs/3648758437/jobs/6162554821

[robrwo]

Is it possible to run it on earlier Perls? The module gives v5.10 as minimum, so I'd at least like to run tests on earlier versions of Perl if possible.

[robrwo]

Thanks. I'm fine with this, but can we test earlier Perl versions?

[szabgab]

Sure. I only limited it for the initial PR.
I think you can have Linux as early as 5.10 Windows probably only later but it does not work now anyway. I don't know about Mac. Shall I experiment with it and send you a new PR or would you want to do it?

[robrwo]

I think I've gotten it working, thanks.

[szabgab]

Hi @robrwo,

I received a lot of value from the open source work of others. This PR was my way of passing on the good deed to someone else. I am trying now to encourage others, you too, to find other project(s) and make a small contribution there. See this issue explaining my reasoning further: OSDC-Code-Maven/OSDC-Code-Maven.github.io#5