ci: add action-verify-bytecode workflow

.github/workflows/verify-bytecode.yml

@@ -0,0 +1,51 @@
+---
+name: Verify deployed contracts' bytecode
+
+on:
+  pull_request:
+    branches:
+      - "master"
+
+jobs:
+  assert-bytecode:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+
+      - name: Setup node.js version
+        uses: actions/setup-node@v3
+        with:
+          node-version: 14
+
+      - name: Cache node_modules
+        id: cache-node-modules
+        uses: actions/cache@v3
+        with:
+          path: "**/node_modules"
+          key: node_modules-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: node_modules-${{ hashFiles('**/package-lock.json') }}
+
+      - name: Install node dependencies
+        run: npm i
+        if: |
+          steps.cache-node-modules.outputs.cache-hit != 'true'
+
+      - name: Compile contracts
+        run: npm run compile
+
+      - name: Verify bytecode of contracts on Optimism chain
+        uses: lidofinance/action-verify-bytecode@master
+        if: always()
+        with:
+          file: artifacts-opt.json
+          rpcUrl: ${{ secrets.OPTIMISM_RPC }}
+
+      - name: Verify bytecode of contracts on Arbitrum chain
+        uses: lidofinance/action-verify-bytecode@master
+        if: always()
+        with:
+          file: artifacts-arb.json
+          rpcUrl: ${{ secrets.ARBITRUM_RPC }}

artifacts-arb.json

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+[
+  {
+    "artifactPath": "artifacts/contracts/bridges/ArbitrumBridgeExecutor.sol/ArbitrumBridgeExecutor.json",
+    "sourcePath": "contracts/bridges/ArbitrumBridgeExecutor.sol",
+    "name": "ArbitrumBridgeExecutor",
+    "address": "0x1dcA41859Cd23b526CBe74dA8F48aC96e14B1A29",
+    "txHash": "0x182706c6ea244a184363608b646636e159238dbc737619873390b1021dd7857c"
+  }
+]

artifacts-opt.json

@@ -0,0 +1,9 @@
+[
+  {
+    "artifactPath": "artifacts/contracts/bridges/OptimismBridgeExecutor.sol/OptimismBridgeExecutor.json",
+    "sourcePath": "contracts/bridges/OptimismBridgeExecutor.sol",
+    "name": "OptimismBridgeExecutor",
+    "address": "0xEfa0dB536d2c8089685630fafe88CF7805966FC3",
+    "txHash": "0xb2cac3cea80817ddf1e5ae042a0a3cd6e017e30e663f857ae1be6f171a39e49b"
+  }
+]