Add woodpecker pipeline

.woodpecker.yml

@@ -0,0 +1,25 @@
+pipeline:
+  syntax-check:
+    image: ansible/ansible:latest
+    commands:
+      - ansible-playbook --syntax-check ansible/playbooks/*.yml
+
+  validate:
+    image: ansible/ansible:latest
+    commands:
+      - ansible-playbook -i ansible/inventory/hosts.yml ansible/playbooks/validate.yml
+
+  drift-check:
+    image: ansible/ansible:latest
+    commands:
+      - ansible-playbook -i ansible/inventory/hosts.yml ansible/playbooks/drift-check.yml
+    when:
+      event: pull_request
+
+  deploy:
+    image: ansible/ansible:latest
+    commands:
+      - ansible-playbook -i ansible/inventory/hosts.yml ansible/playbooks/apply.yml
+    when:
+      branch: master
+      event: push