Switch to GitHub Actions

[afritz1]

Switch to GitHub Actions

[Allofich]

.travis.yml and the CI folder can probably be deleted?

Those were only for Travis CI, so it should be fine to delete them if you are migrating to GitHub Actions.

[Allofich]

Of course it might be helpful to keep them around as a reference until the GitHub Actions are building successfully.

[Allofich]

To get the current cmake.yml file working (Linux build), add a new step before the "Configure CMake" step to install the dependencies, like

name: Install dependencies
      run: sudo apt-get install libegl1-mesa-dev libgles2-mesa-dev libsdl2-dev libopenal-dev

The name "Install dependencies" is just a name I chose, I think it can be anything. The above doesn't include WildMIDI, so the build will be without it. To get it, too, you can use the following instead:

name: Install dependencies
      run: |
           sudo apt-get install libegl1-mesa-dev libgles2-mesa-dev libsdl2-dev libopenal-dev
           wget https://github.com/Mindwerks/wildmidi/archive/master.zip
           unzip master.zip
           pushd wildmidi-master && mkdir build && pushd build && cmake .. && make && sudo make install && popd && popd

[afritz1]

Looks like that worked. Thanks Allofich! Just the Linux build is fine for now.