feat(ci): Allow uploading single files

testdata/upload-download/.forgejo/workflows/test.yml

@@ -122,5 +122,30 @@ jobs:
             exit 1
           fi
 
+      - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        id: release-upload-files
+        uses: SELF@vTest
+        with:
+          direction: upload
+          tag: v/3.0-release-file
+          token: FORGEJO_TEST_TOKEN
+          release-files: |
+            upload-dir-v3/file1-v3.txt
+            upload-dir-v3/file2-v3.txt
+          release-notes: "RELEASE NOTES"
+          verbose: true
+      - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        id: release-download-with-slash-in-tag
+        uses: SELF@vTest
+        with:
+          direction: download
+          tag: v/3.0
+          token: FORGEJO_TEST_TOKEN
+          release-dir: download-dir-v3-files
+          verbose: true
+      - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
+        run: |
+          diff -u upload-dir-v3 download-dir-v3
+
       - if: failure()
         run: docker logs forgejo