try upload build binaries artifacts

.github/workflows/build.yml

@@ -62,6 +62,12 @@ jobs:
     - name: Build
       run: python3 tools/build_family.py ${{ matrix.family }}
 
+    - uses: actions/upload-artifact@v2
+      with:
+        name: ${{ matrix.family }}
+        path: _bin/
+     #TODO upload release assest upload
+
   # Build all no-family (opharned) boards
   build-board:
     runs-on: ubuntu-latest