ci: s57 host-mode k8s runner probe

.forgejo/workflows/s57.yml

@@ -0,0 +1,13 @@
+name: s57-probe
+on: [push]
+jobs:
+  where:
+    runs-on: seaspots-s57-utils
+    steps:
+      - name: identity + toolchain (host-mode on k8s)
+        run: |
+          echo "runner-name: ${RUNNER_NAME:-unknown}"
+          echo "nproc:     $(nproc)"
+          echo "mem-total: $(free -g | awk '/Mem:/{print $2}')Gi"
+          echo "scratch:   $(df -h /scratch | tail -1)"
+          echo "ogr2ogr:   $(ogr2ogr --version | head -1)"