Release engineering improvements (#1844)

* version set from package.json and release bin names

* support direnv virtualenv

* versioned PlatformIO environment

* matrix support for parralel CI

* gather artifacts

* release on tagging

* minor scripts formatting

.github/workflows/wled-ci.yml

@@ -3,10 +3,37 @@ name: PlatformIO CI
 on: [push, pull_request]
 
 jobs:
-  build:
 
+  get_default_envs:
+    name: Gather Environments
     runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Cache pip
+      uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+    - uses: actions/setup-python@v2
+    - name: Install PlatformIO
+      run: pip install -r requirements.txt
+    - name: Get default environments
+      id: envs
+      run: |
+        echo "::set-output name=environments::$(pio project config --json-output | jq -cr '.[0][1][0][1]')"
+    outputs:
+      environments: ${{ steps.envs.outputs.environments }}
 
+
+  build:
+    name: Build Enviornments
+    runs-on: ubuntu-latest
+    needs: get_default_envs
+    strategy:
+      matrix:
+        environment: ${{ fromJSON(needs.get_default_envs.outputs.environments) }}
     steps:
     - uses: actions/checkout@v2
     - name: Cache pip
@@ -24,8 +51,36 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
     - name: Install PlatformIO
-      run: |
-        python -m pip install --upgrade pip
-        pip install --upgrade platformio
-    - name: Run PlatformIO
-      run: pio run
+      run: pip install -r requirements.txt
+    - name: Build firmware
+      env:
+        WLED_RELEASE: True
+      run: pio run -e ${{ matrix.environment }}
+    - uses: actions/upload-artifact@v2
+      with:
+        name: firmware-${{ matrix.environment }}
+        path: |
+          build_output/firmware/*.bin
+          build_output/firmware/*.gz
+    - uses: actions/upload-artifact@v2
+      if: startsWith(github.ref, 'refs/tags/')
+      with:
+        name: firmware-release
+        path: build_output/release/*.bin
+  release:
+    name: Create Release
+    runs-on: ubuntu-latest
+    needs: [get_default_envs, build]
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+    - uses: actions/download-artifact@v2
+      with:
+        name: firmware-release
+    - name: Create draft release
+      uses: softprops/action-gh-release@v1
+      with:
+        draft: True
+        files: |
+          *.bin
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}