ci(pio): add action to automatically publish LVGL as a PlatformIO package on release

.github/workflows/platformio_publish.yaml

@@ -0,0 +1,20 @@
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+" # Push events to matching v*, i.e. v1.0, v20.15.10
+
+name: PlatformIO Publish
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+      - name: Intsall Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
+      - name: Publish
+        run: pio pkg publish --owner lvgl .