chore: enable release-drafter (#220)

This change will make use of release drafter for drafting changelog
updates on https://github.com/ansible/event-driven-ansible/releases
so it would be much easier to know what was merged and if a release
is needed or not.

.github/release-drafter.yml

@@ -0,0 +1,3 @@
+---
+# see https://github.com/ansible/team-devtools
+_extends: ansible/team-devtools

.github/workflows/ack.yml

@@ -0,0 +1,11 @@
+---
+# See https://github.com/ansible/devtools/blob/main/.github/workflows/ack.yml
+name: ack
+"on":
+  pull_request_target:
+    types: [opened, labeled, unlabeled, synchronize]
+
+jobs:
+  ack:
+    uses: ansible/team-devtools/.github/workflows/ack.yml@main
+    secrets: inherit

.github/workflows/push.yml

@@ -0,0 +1,13 @@
+---
+# See https://github.com/ansible/devtools/blob/main/.github/workflows/push.yml
+name: push
+"on":
+  push:
+    branches:
+      - main
+      - "releases/**"
+      - "stable/**"
+
+jobs:
+  ack:
+    uses: ansible/team-devtools/.github/workflows/push.yml@main