[CI] Add workflor for arduino-lint.

.github/workflows/arduino-lint.yml

@@ -0,0 +1,28 @@
+name: Arduino Lint
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch breakage caused by new rules added to Arduino Lint.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Arduino Lint
+        uses: arduino/arduino-lint-action@v1
+        with:
+          compliance: specification
+          library-manager: submit
+          # Always use this setting for official repositories. Remove for 3rd party projects.
+          official: true
+          project-type: library

README.md

@@ -1,5 +1,7 @@
 :floppy_disk: `Arduino_open62541`
 =================================
+[![Arduino Lint](https://github.com/bcmi-labs/Arduino_open62541/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/bcmi-labs/Arduino_open62541/actions/workflows/arduino-lint.yml)
+
 This library provides an implementation of [OPC/UA](https://en.wikipedia.org/wiki/OPC_Unified_Architecture) by porting the Fraunhofer [`open62541`](https://github.com/open62541/open62541) for the Arduino [Opta](https://www.arduino.cc/pro/hardware-arduino-opta/) `microPLC` family.
 
 ### How-to-`opcua-client-gui`