.github/workflows: zephyr workflow windows-build uploads artifacts

Github allows to store build artifacts for 90 days after the build.
Somebody might want to examine the output of the build, now can
easily download everything that job produces.
In example, compile_commands.json file contains all compilation
commands in verbose that are not visible in the build log
by default.

Signed-off-by: Andrey Borisovich <andrey.borisovich@intel.com>

.github/workflows/zephyr.yml

@@ -77,6 +77,14 @@ jobs:
              ./sof/zephyr/docker-build.sh --cmake-args=-DEXTRA_CFLAGS=-Werror
              --cmake-args=--warn-uninitialized ${{ matrix.IPC_platforms }}
 
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: linux-build-output
+          path: |
+            ${{ github.workspace }}/workspace/build-sof-staging
+            ${{ github.workspace }}/workspace/**/compile_commands.json
+
   build-windows:
     runs-on: windows-latest
     strategy:
@@ -206,3 +214,11 @@ jobs:
           --no-interactive
           --cmake-args=-DEXTRA_CFLAGS=-Werror
           --cmake-args=--warn-uninitialized ${{ matrix.platforms }}
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: windows-build-output
+          path: |
+            ${{ github.workspace }}/workspace/build-sof-staging
+            ${{ github.workspace }}/workspace/**/compile_commands.json