Added artifact storing into building GitHub Action

Author: Amsakan Bavan

.github/workflows/build.yml

@@ -23,4 +23,11 @@ jobs:
         run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
 
       - name: Build
-        run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+        run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}
+
+      - name: Upload VST3 artifacts
+        working-directory: ./build/aGain_artefacts/${{env.BUILD_TYPE}}/VST3
+        with:
+          name: aGain-${{matrix.os}}
+          path: |
+            *.vst3