save executable binary as an artifact on test

Author: 417-72KI

.github/workflows/ci.yml

@@ -67,5 +67,12 @@ jobs:
         run: |
             swift package resolve
             sudo swift .build/checkouts/ClangSwift/utils/make-pkgconfig.swift
+      - name: Build
+        run: swift build
       - name: Test
         run: swift test
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          path: .build/debug/sbgen
+          name: sbgen-${{ github.sha }}-xcode-${{ matrix.xcode_version }}