add circom test CI

.github/workflows/test.yml

@@ -0,0 +1,35 @@
+name: circom
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  circom:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+
+    - name: Install dependencies
+      run: |
+        npm install
+        npm install -g snarkjs
+
+    - name: Download and install Circom
+      run: |
+        CIRCOM_VERSION=2.1.9
+        curl -L https://github.com/iden3/circom/releases/download/v$CIRCOM_VERSION/circom-linux-amd64 -o circom
+        chmod +x circom
+        sudo mv circom /usr/local/bin/
+        circom --version
+
+    - name: Run tests
+      run: npm run test