Add podman Quadlet modules

This commit introduces two new modules for managing Podman Quadlets:

- podman_quadlet: Install and remove Podman Quadlet files
  * Supports installing single files, directories, and additional config files
  * Implements idempotent state management (present/absent)
  * Validates parameters and provides meaningful error messages
  * Default force=true for removal operations
  * Removed deprecated 'ignore' parameter in favor of built-in idempotency

- podman_quadlet_info: Gather information about installed Quadlets
  * Lists all installed quadlets or prints specific quadlet content
  * Supports filtering by quadlet kinds (container, pod, network, etc.)
  * Provides detailed quadlet metadata including status and paths

Key features:
- Shared utilities in module_utils/podman/quadlet.py for code reuse
- Comprehensive integration tests for both modules
- Full idempotency support for all operations
- Proper handling of edge cases (missing files, malformed quadlets, etc.)
- Check mode support for safe dry-run operations
- Extensive documentation and examples

The modules use relative imports for module_utils to support local
development and testing with the containers.podman collection.

Signed-off-by: Sagi Shnaidman <sshnaidm@redhat.com>

.github/workflows/podman_quadlet.yml

@@ -0,0 +1,34 @@
+name: Podman quadlet
+
+on:
+  push:
+    paths:
+      - ".github/workflows/podman_quadlet.yml"
+      - ".github/workflows/reusable-module-test.yml"
+      - "ci/*.yml"
+      - "ci/run_containers_tests.sh"
+      - "ci/playbooks/containers/podman_quadlet.yml"
+      - "plugins/modules/podman_quadlet.py"
+      - "plugins/module_utils/podman/quadlet.py"
+      - "tests/integration/targets/podman_quadlet/**"
+    branches:
+      - main
+  pull_request:
+    paths:
+      - ".github/workflows/podman_quadlet.yml"
+      - ".github/workflows/reusable-module-test.yml"
+      - "ci/*.yml"
+      - "ci/run_containers_tests.sh"
+      - "ci/playbooks/containers/podman_quadlet.yml"
+      - "plugins/modules/podman_quadlet.py"
+      - "plugins/module_utils/podman/quadlet.py"
+      - "tests/integration/targets/podman_quadlet/**"
+  schedule:
+    - cron: 4 0 * * * # Run daily at 0:04 UTC
+
+jobs:
+  test_podman_quadlet:
+    uses: ./.github/workflows/reusable-module-test.yml
+    with:
+      module_name: "podman_quadlet"
+      display_name: "Podman quadlet"