GH action extended

[chcg]

• added arm64 build
• gh action update check via dependabot
• added gh mingw build + fix #21

[ffes]

Thanks for the PR.

I have tried the fix for the Makefile and it worked. Thanks a lot for that!

Although I am not a big fan of adding very different things in one PR, thanks for adding the ARM64 build.

I have added the ARM64 compilers to Visual Studio and that seems to work. But I have no way to check if that works. I don't have a Windows ARM64 device.

And I have a couple of questions:

Why have you added the gh action dependabot? The project doesn't have any dependencies it can check as far as I am aware of. The only external dependency are SQLite and the NPP headers. But all those files are just copied into the repository. So I don't see any need to add dependabot.

Why is the MinGW-build added to msbuild.yml and not added as a separate mingw-build.yml?

And looking at the YML the BITS=${{ matrix.build_platform }} is not gonna work. I would suggest to change it to something like this (note that I haven't tested this):

- name: build x86
  if: matrix.build_platform == '32'
  run: make ARCH=i686-w64-mingw32

- name: build x64
  if: matrix.build_platform == '64'
  run: make ARCH=x86_64-w64-mingw32

[chcg]

• dependabot checks for updated github actions, e.g. if there is a newer version of actions/checkout@v2
• the mingw build could be splitted into an extra yml file, in my repos it is just named CI_build.yml and therefore I was blind to spot the different file names, corrected that
• missed to add the variable bits to the makefile, modifying ARCH from the yml is also an option

[ffes]

Apart from the small change I requested in the Makefile the PR looks good to me.

[chcg]

adapted gh action and makefile to your suggestion

[ffes]

Thanks again for the PR