Update CI workflow for Arduino project-specific linting

.github/workflows/check-arduino.yml

@@ -0,0 +1,26 @@
+name: Check Arduino
+
+# 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@v2
+
+      - name: Arduino Lint
+        uses: arduino/arduino-lint-action@v1
+        with:
+          compliance: specification
+          library-manager: update
+          project-type: library

.github/workflows/check-keywords-txt.yml

@@ -0,0 +1,36 @@
+name: Check keywords.txt
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+    paths:
+      - ".github/workflows/check-keywords-txt.yml"
+      - "keywords.txt"
+  pull_request:
+    paths:
+      - ".github/workflows/check-keywords-txt.yml"
+      - "keywords.txt"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  extra-library-checks:
+    runs-on: ubuntu-latest
+
+    env:
+      ARDUINO_CI_SCRIPT_FOLDER: extras/ci-tools/arduino-ci-script
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install arduino-ci-script
+        uses: per1234/install-arduino-ci-script-action@main
+        with:
+          installation-path: ${{ env.ARDUINO_CI_SCRIPT_FOLDER }}
+
+      # See: https://github.com/per1234/arduino-ci-script#check_keywords_txt-searchpath-maximumsearchdepth
+      - name: Check keywords.txt
+        run: |
+          source "${ARDUINO_CI_SCRIPT_FOLDER}/arduino-ci-script.sh"
+          check_keywords_txt "$GITHUB_WORKSPACE"

README.md

@@ -2,7 +2,8 @@
 =====================
 
 [![Compile Examples](https://github.com/107-systems/107-Arduino-TMF8801/workflows/Compile%20Examples/badge.svg)](https://github.com/107-systems/107-Arduino-TMF8801/actions?workflow=Compile+Examples)
-[![Extra Library Checks](https://github.com/107-systems/107-Arduino-TMF8801/workflows/Extra%20Library%20Checks/badge.svg)](https://github.com/107-systems/107-Arduino-TMF8801/actions?workflow=Extra+Library+Checks)
+[![Check Arduino](https://github.com/107-systems/107-Arduino-TMF8801/actions/workflows/check-arduino.yml/badge.svg)](https://github.com/107-systems/107-Arduino-TMF8801/actions/workflows/check-arduino.yml)
+[![Check keywords.txt](https://github.com/107-systems/107-Arduino-TMF8801/actions/workflows/check-keywords-txt.yml/badge.svg)](https://github.com/107-systems/107-Arduino-TMF8801/actions/workflows/check-keywords-txt.yml)
 [![General Formatting Checks](https://github.com/107-systems/107-Arduino-TMF8801/workflows/General%20Formatting%20Checks/badge.svg)](https://github.com/107-systems/107-Arduino-TMF8801/actions?workflow=General+Formatting+Checks)
 [![Spell Check](https://github.com/107-systems/107-Arduino-TMF8801/workflows/Spell%20Check/badge.svg)](https://github.com/107-systems/107-Arduino-TMF8801/actions?workflow=Spell+Check)