Create HSM testing workflow

This commit is an initial prototype based on the deployment workflow, using the
Azure Code Signing service to sign Windows .exe and .msi files.

These changes have been isolated as much as possible to not affect existing
deployment workflows while also working around design issues with how GitHub
CLI workflow works with GoReleaser and now with ACS support.  The biggest smell
was over whether to break from using GoReleaser or have GoReleaser control as
much about the release process as it has been versus opening / signing /
archiving the resulting GoReleaser artifacts; needless to say, the latter was
chosen for expedience as well as leaning into officially supported solutions.

.github/workflows/hsm-testing.yml

@@ -0,0 +1,127 @@
+name: HSM Testing
+run-name: ${{ inputs.tag_name }} / go ${{ inputs.go_version }}
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}
+  cancel-in-progress: true
+
+permissions:
+  contents: write
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag_name:
+        required: true
+        type: string
+      go_version:
+        default: "1.21"
+        type: string
+
+jobs:
+  windows:
+    runs-on: windows-latest
+    environment: production
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: ${{ inputs.go_version }}
+      - name: Install GoReleaser
+        uses: goreleaser/goreleaser-action@v5
+        with:
+          version: "~1.17.1"
+          install-only: true
+      - name: Build release binaries
+        shell: bash
+        env:
+          TAG_NAME: ${{ inputs.tag_name }}
+        run: script/release-hsm --local "$TAG_NAME" --platform windows --config .goreleaser-hsm.yml
+
+      # As official Azure HSM support for signing Windows .exe binaries is in the form of an action,
+      # we must unzip the archives created by GoReleaser, sign the binaries, and then re-zip them.
+      # This choice was due to the fact that GoReleaser produces 
+      - name: Expand goreleaser archives for signing
+        shell: bash
+        run: |
+          for ZIP_FILE in dist/gh_*_windows_*.zip; do
+            unzip -d "${ZIP_FILE%.zip}" "$ZIP_FILE"
+          done
+      - name: Sign .exe release binaries
+        uses: azure/azure-code-signing-action@6c86237186b7eed50c9e8a3a6e42131bcc5e4601
+        with:
+            azure-tenant-id: ${{ secrets.SPN_SPN_AZURE_CODE_SIGNING_DEMO_TENANT_ID }}
+            azure-client-id: ${{ secrets.SPN_SPN_AZURE_CODE_SIGNING_DEMO_CLIENT_ID }}
+            azure-client-secret: ${{ secrets.SPN_SPN_AZURE_CODE_SIGNING_DEMO }}
+            endpoint: https://wus.codesigning.azure.net/
+            code-signing-account-name: GitHubInc
+            certificate-profile-name: GitHubInc
+            files-folder: ${{ github.workspace }}/dist
+            files-folder-filter: exe
+            file-digest: SHA256
+            timestamp-rfc3161: http://timestamp.acs.microsoft.com
+            timestamp-digest: SHA256
+      - name: Zip goreleaser directories
+        shell: bash
+        run: |
+          for DIR in dist/gh_*_windows_*; do
+            zip -r "$DIR.zip" "$DIR"
+          done
+
+      - name: Set up MSBuild
+        id: setupmsbuild
+        uses: microsoft/setup-msbuild@v1.3.1
+      - name: Build MSI
+        shell: bash
+        env:
+          MSBUILD_PATH: ${{ steps.setupmsbuild.outputs.msbuildPath }}
+        run: |
+          for ZIP_FILE in dist/gh_*_windows_*.zip; do
+            MSI_NAME="$(basename "$ZIP_FILE" ".zip")"
+            MSI_VERSION="$(cut -d_ -f2 <<<"$MSI_NAME" | cut -d- -f1)"
+            case "$MSI_NAME" in
+            *_386 )
+              source_dir="$PWD/dist/windows_windows_386"
+              platform="x86"
+              ;;
+            *_amd64 )
+              source_dir="$PWD/dist/windows_windows_amd64_v1"
+              platform="x64"
+              ;;
+            *_arm64 )
+              echo "skipping building MSI for arm64 because WiX 3.11 doesn't support it: https://github.com/wixtoolset/issues/issues/6141" >&2
+              continue
+              #source_dir="$PWD/dist/windows_windows_arm64"
+              #platform="arm64"
+              ;;
+            * )
+              printf "unsupported architecture: %s\n" "$MSI_NAME" >&2
+              exit 1
+              ;;
+            esac
+            "${MSBUILD_PATH}\MSBuild.exe" ./build/windows/gh.wixproj -p:SourceDir="$source_dir" -p:OutputPath="$PWD/dist" -p:OutputName="$MSI_NAME" -p:ProductVersion="${MSI_VERSION#v}" -p:Platform="$platform"
+          done
+      - name: Sign .msi release binaries
+        uses: azure/azure-code-signing-action@6c86237186b7eed50c9e8a3a6e42131bcc5e4601
+        with:
+            azure-tenant-id: ${{ secrets.SPN_SPN_AZURE_CODE_SIGNING_DEMO_TENANT_ID }}
+            azure-client-id: ${{ secrets.SPN_SPN_AZURE_CODE_SIGNING_DEMO_CLIENT_ID }}
+            azure-client-secret: ${{ secrets.SPN_SPN_AZURE_CODE_SIGNING_DEMO }}
+            endpoint: https://wus.codesigning.azure.net/
+            code-signing-account-name: GitHubInc
+            certificate-profile-name: GitHubInc
+            files-folder: ${{ github.workspace }}/dist
+            files-folder-filter: msi
+            file-digest: SHA256
+            timestamp-rfc3161: http://timestamp.acs.microsoft.com
+            timestamp-digest: SHA256
+      - uses: actions/upload-artifact@v3
+        with:
+          name: windows
+          if-no-files-found: error
+          retention-days: 7
+          path: |
+            dist/*.zip
+            dist/*.msi