build pico hid firmware on github

.github/workflows/pico-hid-release.yml

@@ -0,0 +1,41 @@
+name: Pico HID Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Installing deps ...
+        run: sudo apt-get install cmake gcc-arm-none-eabi build-essential
+
+      - name: Building ...
+        run: make -C hid/pico all
+
+      - name: Releasing ...
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false
+
+      - name: Uploading firmware ...
+        id: upload-release-asset 
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./hid/pico/hid.uf2
+          asset_name: pico-hid.uf2
+          asset_content_type: application/octet-stream