Move the repository to monorepo.

This commit:
- mentions the monorepo in the README.MD.
- deprecates the module in favor of go.podman.io/common.
- adds github workflow to auto-close newly created PRs.

Signed-off-by: Jan Kaluza <jkaluza@redhat.com>

Author: jankaluza

.github/workflows/auto-close-prs.yml

@@ -0,0 +1,15 @@
+name: Close Pull Request
+
+on:
+  pull_request_target:
+    types: [opened]
+    branches:
+      - main
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: superbrothers/close-pull-request@v3
+      with:
+        comment: "This repository has been migrated to https://github.com/containers/container-libs. Please open your PR there."

README.md

@@ -1,5 +1,9 @@
 # containers/common
 
+> [!WARNING]
+> New development of this project happens on https://github.com/containers/container-libs.
+> For more information, check https://blog.podman.io/2025/08/upcoming-migration-of-three-containers-repositories-to-monorepo/.
+
 Location for shared common files and common go code to manage those files in
 github.com/containers repos.
 

go.mod

@@ -1,3 +1,4 @@
+// Deprecated: Use go.podman.io/common instead.
 module github.com/containers/common
 
 // Warning: Ensure the "go" and "toolchain" versions match exactly to prevent unwanted auto-updates