misc: add test workflow for gateway helm

.github/workflows/release_helm_gateway.yaml

@@ -3,8 +3,51 @@ on:
   workflow_dispatch:
 
 jobs:
+  test-helm:
+    name: Test Helm Chart
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up Helm
+        uses: azure/[email protected]
+        with:
+          version: v3.17.0
+
+      - uses: actions/[email protected]
+        with:
+          python-version: "3.x"
+          check-latest: true
+
+      - name: Set up chart-testing
+        uses: helm/[email protected]
+
+      - name: Run chart-testing (lint)
+        run: ct lint --config ct.yaml --charts helm-charts/infisical-gateway
+
+      - name: Create kind cluster
+        uses: helm/[email protected]
+
+      - name: Create namespace
+        run: kubectl create namespace infisical-gateway
+
+      - name: Create gateway secret
+        run: kubectl create secret generic infisical-gateway-environment --from-literal=TOKEN=my-test-token -n infisical-gateway
+
+      - name: Run chart-testing (install)
+        run: |
+          ct install \
+            --config ct.yaml \
+            --charts helm-charts/infisical-gateway \
+            --helm-extra-args="--timeout=300s" \
+            --namespace infisical-gateway
+
   release-helm:
     name: Release Helm Chart
+    needs: test-helm
     runs-on: ubuntu-latest
     steps:
       - name: Checkout