feat: publish CLI binaries and detached signatures to releases.coder.com (coder#18874)

Starting with version `2.24.X `, Coder CLI binaries & corresponding
detached signatures will get published to the GCS bucket
releases.coder.com.

Author: jdomeracki-coder

.github/workflows/release.yaml

@@ -634,6 +634,29 @@ jobs:
       - name: ls build
         run: ls -lh build
 
+      - name: Publish Coder CLI binaries and detached signatures to GCS
+        if: ${{ !inputs.dry_run && github.ref == 'refs/heads/main' && github.repository_owner == 'coder'}}
+        run: |
+          set -euxo pipefail
+
+          version="$(./scripts/version.sh)"
+
+          binaries=(
+              "coder-darwin-amd64"
+              "coder-darwin-arm64"
+              "coder-linux-amd64"
+              "coder-linux-arm64"
+              "coder-linux-armv7"
+              "coder-windows-amd64.exe"
+              "coder-windows-arm64.exe"
+          )
+
+          for binary in "${binaries[@]}"; do
+            detached_signature="${binary}.asc"
+            gcloud storage cp "./site/out/bin/${binary}" "gs://releases.coder.com/coder-cli/${version}/${binary}"
+            gcloud storage cp "./site/out/bin/${detached_signature}" "gs://releases.coder.com/coder-cli/${version}/${detached_signature}"
+          done  
+
       - name: Publish release
         run: |
           set -euo pipefail