Add artifact upload for installer CI

Author: IExploitableMan

.github/workflows/installer_ci.yml

@@ -26,4 +26,8 @@ jobs:
       run: pip install -r requirements.txt
     - name: Build
       run: python build.py
+    - uses: actions/upload-artifact@v4
+      with:
+        name: ${{ matrix.os }}
+        path: dist/