ci: try test workflows

.forgejo/workflows/check.yml

@@ -0,0 +1,14 @@
+on: [push]
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: https://code.forgejo.org/actions/checkout@v3
+      - uses: https://github.com/cachix/install-nix-action@v22
+        with:
+          install_url: https://nixos.org/nix/install
+          extra_nix_config: |
+            auto-optimise-store = true
+            access-tokens = ${{ secrets.FORGEJO_TOKEN }}
+            experimental-features = nix-command flakes
+      - run: nix flake check

.forgejo/workflows/test.yaml

@@ -1,6 +0,0 @@
-on: [push]
-jobs:
-  test:
-    runs-on: ubuntu-latest
-    steps:
-      - run: echo All Good