Implement automatic CDN publishing (#403)

.github/actions/publish-firmware/action.yml

@@ -0,0 +1,24 @@
+name: Publish Firmware
+
+inputs:
+  cdn_version:
+    description: The version that determines the path on the CDN
+    required: true
+
+runs:
+  using: 'composite'
+  steps:
+    - name: 'Download all-firmwares'
+      uses: actions/download-artifact@v4
+      with:
+        name: 'all-firmwares'
+        path: firmwares
+    - name: 'Install boto3'
+      shell: bash
+      run: pip install boto3
+    - name: 'Generate files'
+      shell: bash
+      run: version=`cat version.txt` && python Buildscripts/CDN/generate-files.py firmwares firmwares-cdn $version
+    - name: 'Upload files'
+      shell: bash
+      run: python Buildscripts/CDN/upload-files.py firmwares-cdn ${{ inputs.cdn_version }} ${{ env.CDN_ID }} ${{ env.CDN_TOKEN_NAME }} ${{ env.CDN_TOKEN_VALUE }}

.github/workflows/build-firmware.yml

@@ -3,6 +3,8 @@ on:
   push:
     branches:
       - main
+    tags:
+      - v*
   pull_request:
     types: [ opened, synchronize, reopened ]
 
@@ -57,8 +59,38 @@ jobs:
   Bundle:
     runs-on: ubuntu-latest
     needs: [ Build ]
-    if: (github.event_name == 'pull_request' && startsWith(github.head_ref, 'release'))
+    if: |
+      (github.event_name == 'push' && github.ref == 'refs/heads/main') ||
+      (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v'))
     steps:
       - uses: actions/checkout@v4
       - name: "Bundle"
         uses: ./.github/actions/bundle-firmware
+  PublishSnapshot:
+    runs-on: ubuntu-latest
+    needs: [ Bundle ]
+    if: (github.event_name == 'push' && github.ref == 'refs/heads/main')
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Publish Snapshot"
+        env:
+          CDN_ID: ${{ secrets.CDN_ID }}
+          CDN_TOKEN_NAME: ${{ secrets.CDN_TOKEN_NAME }}
+          CDN_TOKEN_VALUE: ${{ secrets.CDN_TOKEN_VALUE }}
+        uses: ./.github/actions/publish-firmware
+        with:
+          cdn_version: snapshot
+  PublishRelease:
+    runs-on: ubuntu-latest
+    needs: [ Bundle ]
+    if: (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v'))
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Publish Stable"
+        env:
+          CDN_ID: ${{ secrets.CDN_ID }}
+          CDN_TOKEN_NAME: ${{ secrets.CDN_TOKEN_NAME }}
+          CDN_TOKEN_VALUE: ${{ secrets.CDN_TOKEN_VALUE }}
+        uses: ./.github/actions/publish-firmware
+        with:
+          cdn_version: stable