Support for installing 32-bit Elixir on Windows

[gilbertbw]

Is your feature request related to a problem?

I need to build a 32-bit Windows mix release of my project, but this Action only installs the 64bit version of Erlang/OTP and Elixir.

Describe the feature you'd like

I would like the ability to specify which processor architecture of OTP/Erlang to install, when running on windows.

I am picturing something like:

  blah:
    name: Create release
    runs-on: windows-2022
    steps:
    - name: Set up Elixir
      uses: erlef/setup-beam@v1
      with:
        version-type: strict
        otp-version: "27.2"
        elixir-version: "1.18.1-otp-27"
        architecture: "win32"

Describe alternatives you've considered

N/A

Additional context

I think this would require updating install for win32 opt:

setup-beam/src/setup-beam.js

Lines 801 to 802 in e5b6619

	'https://github.com/erlang/otp/releases/download/' +
	`OTP-${toolVersion}/otp_win64_${toolVersion}.exe`,

to optionally use the win32 version. I see that elixir releases appear to be platform agnostic, so no change is required there?

I see that for Linux bob builds of OTP are used, and bob only builds 64bit releases. So I don't think it's possible to easily support this option for Linux environments.

[gilbertbw]

I have managed to get this working by hardcoding the URL to ..._win32_...:, gilbertbw@edae29d