Release CI workflow added, which automatically releases a PIO library…

… version.

.github/workflows/main.yml

@@ -23,7 +23,7 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Dependencies
       - name: Build CUnit

.github/workflows/release.yml

@@ -0,0 +1,58 @@
+name: Relase Script
+
+# Controls when the action will run.
+on:
+  release:
+    # A release, pre-release, or draft of a release is published.
+    types: [published]
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # The introduction just shows some useful informations.
+  intro:
+    # The type of runner that the job will run on.
+    runs-on: ubuntu-latest
+    # Steps represent a sequence of tasks that will be executed as part of the job.
+    steps:
+      - run: echo "The job was automatically triggered by a ${{ github.event_name }} event."
+      - run: echo "The name of the branch is ${{ github.ref }} and the repository is ${{ github.repository }}."
+
+  publish:
+    # The type of runner that the job will run on.
+    runs-on: ubuntu-latest
+    # Intro must run first
+    needs: intro
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Cache pip
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+
+      - name: Cache PlatformIO
+        uses: actions/cache@v4
+        with:
+          path: ~/.platformio
+          key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.9"
+
+      - name: Install PlatformIO
+        run: |
+          python -m pip install --upgrade pip
+          pip install --upgrade platformio
+
+      - name: Deploy Package to Registry
+        env:
+          PLATFORMIO_AUTH_TOKEN: ${{ secrets.PLATFORMIO_AUTH_TOKEN }}
+        run: |
+          platformio package publish --non-interactive