ci: add arm builds (#481)

### Why

Turns out we don't need the beta github runners for arm64 builds.
Following
[this](https://learn.microsoft.com/en-us/dotnet/core/deploying/native-aot/cross-compile#linux)
ms doc, mac and windows were already solved. If arm64 runners are
cheaper they should also just work out of the box to compile to x86

Excluding linux here as there were issues getting it setup with
amazonlinux2. We're going to build amazonlinux2 arm64 manually as part
of our testing for a new release for now.

### Ticket

VUL-71

.github/workflows/publish.yml

@@ -94,12 +94,21 @@ jobs:
             /p:InformationalVersion="$version" `
             /p:IncludeSourceRevisionInInformationalVersion=false `
             -r $env:PLATFORM-x64 `
-            -o build
+            -o build/x64
+
+          dotnet publish `
+            /p:Version="$versionWithoutv" `
+            /p:InformationalVersion="$version" `
+            /p:IncludeSourceRevisionInInformationalVersion=false `
+            -r $env:PLATFORM-arm64 `
+            -o build/arm64
 
       - name: check size
         shell: pwsh
         working-directory: src/D2L.Bmx
-        run: Get-ChildItem build
+        run: |
+          Get-ChildItem build/x64
+          Get-ChildItem build/arm64
 
       - name: upload build
         if: github.event_name == 'workflow_dispatch'
@@ -112,12 +121,30 @@ jobs:
         working-directory: src/D2L.Bmx/build
         run: |
           if ($env:PLATFORM -eq 'win') {
+            Push-Location "x64"
             Compress-Archive -Path "bmx.exe" -DestinationPath "bmx-win-x64.zip"
+            Pop-Location
+
+            Push-Location "arm64"
+            Compress-Archive -Path "bmx.exe" -DestinationPath "bmx-win-arm64.zip"
+            Pop-Location
+
             gh release upload "$env:RELEASE_ID" "bmx-win-x64.zip"
+            gh release upload "$env:RELEASE_ID" "bmx-win-arm64.zip"
           } elseif ($env:PLATFORM -eq 'osx') {
-            chmod +x "bmx"
+            chmod +x "./x64/bmx"
+            chmod +x "./arm64/bmx"
+
+            Push-Location "x64"
             tar -czvf "bmx-osx-x64.tar.gz" "bmx"
+            Pop-Location
+
+            Push-Location "arm64"
+            tar -czvf "bmx-osx-arm64.tar.gz" "bmx"
+            Pop-Location
+
             gh release upload "$env:RELEASE_ID" "bmx-osx-x64.tar.gz"
+            gh release upload "$env:RELEASE_ID" "bmx-osx-arm64.tar.gz"
           }
 
   build_docker:
@@ -128,8 +155,10 @@ jobs:
         include:
           - file: Dockerfile.al2
             platform: linux
+            architecture: x64
           - file: Dockerfile.alpine
             platform: linux.alpine
+            architecture: x64
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
@@ -163,13 +192,14 @@ jobs:
         shell: bash
         env:
           RELEASE_ID: ${{ needs.create_release.outputs.release_id }}
+          ARCHITECTURE: ${{ matrix.architecture }}
           PLATFORM: ${{ matrix.platform }}
           GH_TOKEN: ${{ github.token }}
         working-directory: build
         run: |
           chmod +x "bmx"
-          tar -czvf "bmx-$PLATFORM-x64.tar.gz" "bmx"
-          gh release upload "$RELEASE_ID" "bmx-$PLATFORM-x64.tar.gz"
+          tar -czvf "bmx-$PLATFORM-$ARCHITECTURE.tar.gz" "bmx"
+          gh release upload "$RELEASE_ID" "bmx-$PLATFORM-$ARCHITECTURE.tar.gz"
 
   publish_release:
     needs: [create_release, build, build_docker]