automation: build python targets in pipeline ci-cd

done using a 2d matrix involving the build type (regular or with python)

.github/workflows/pr-pipeline.yaml

@@ -9,6 +9,7 @@ jobs:
   build:
     strategy:
       matrix:
+        build_type: ["build", "build-with-python"]
         architecture: ["x86_64", "arm", "aarch64", "powerpc", "mips", "mipsel"]
 
     runs-on: ubuntu-latest
@@ -21,4 +22,4 @@ jobs:
       run: sudo apt-get install -y wget
 
     - name: Build
-      run: make build-${{ matrix.architecture }} -j$((`nproc`+1))
+      run: make ${{ matrix.build_type }}-${{ matrix.architecture }} -j$((`nproc`+1))