Create GitHub workflows

[DanielBadura]

This PR aims to add GitHub workflows in favor of travis and appveyor.
I think all the ci jobs are ported from travis beside of the nightly build check. I dont know if a solution exists atm but last time i checked this was not really possible in a "clean" way. See: actions/runner#2347

I also realized that we dont have any cs check atm. Maybe we should add them in the near future?

Also i think Action are not enabled yet here. See my test PR on my Repo for the output: DanielBadura#2
I mostly check at BetterReflection as a reference since I work more with GitLab-CI 🤖

I quite dont understand this part:

on:
    pull_request:
    push:
        branches:
            - "master"

Is on: pull_request: branches: [master] the default? Because i would think with this config workflow should only run if commits gets pushed into master. So i would expect this:

on:
    pull_request:
        branches:
            - "master"
    push:
        branches:
            - "master"

Because no job ran on the first commit i tried it in the psalm workflow but without success. So i figured that action are not enabled here and checked on my repo. There all workflows are running on the PR with or without on: pull_request: branches: [master]

[Ocramius]

Are these perhaps extracted from ProxyManager or such? Looks very familiar :D

[DanielBadura]

From BetterReflection :P

[Ocramius]

🚢 good work!

[sanmai]

Does Composer on Windows store the caches here?

[Ocramius]

Probably not, but given that we use a composer.lock, perhaps we can avoid this caching step overall?

[sanmai]

Well, there are "lowest" and "highest" deps in the matrix, which trigger composer update, which uses cache...

Yet there's a canonical way to handle this.

[sanmai]

restore-keys should have php-${{ matrix.php-version }}- instead, the original key is assumed.

[sanmai]

And the key is lacking ${{ hashFiles('composer.*') }}

[sanmai]

I might open a PR with a comprehensive fix, if that's desirable.

[Ocramius]

@sanmai if you think the caching is botched and you have the time/will to do so, please do :)

[sanmai]

Sure thing: #227