Add GitHub Actions workflow for testing OpenRPC spec

.github/workflows/openrpc-test.yml

@@ -0,0 +1,45 @@
+name: (open-rpc) Test OpenRPC spec
+
+on:
+  pull_request:
+
+jobs:
+  deploy-SC-example:
+    defaults:
+      run:
+        working-directory: ./packages/massa-web3/
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+          cache: "npm"
+          cache-dependency-path: ./packages/massa-web3/
+
+      - name: Install dependencies
+        run: |
+          npm ci
+        working-directory: ./
+
+      - name: Build workspace
+        run: |
+          npm run build
+        working-directory: ./
+
+      - name: Install OpenRPC generation dependencies
+        run: |
+          npm ci
+
+      - name: Generate OpenRPC spec
+        run: |
+          npm run generate
+
+      - name: Test OpenRPC spec
+        run: |
+          npm run test