add loadtest action

.github/workflows/loadtest.yml

@@ -0,0 +1,18 @@
+name: Run Gatling Enterprise Simulation
+
+on:
+  workflow_dispatch:
+    inputs:
+      simulation_id:
+        type: string
+        required: true
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Gatling Enterprise Action
+        uses: gatling/enterprise-action@v1
+        with:
+          api_token: ${{ secrets.GATLING_ENTERPRISE_API_TOKEN }}
+          simulation_id: ${{ inputs.simulation_id }}