Adds the shared workflows (#1603)

Signed-off-by: Albert Callarisa <albert@diagrid.io>

Author: acroca

.github/workflows/backport.yaml

@@ -0,0 +1,25 @@
+#
+# Copyright 2026 The Dapr Authors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+name: Backport
+on:
+  pull_request_target:
+    types:
+      - closed
+      - labeled
+
+jobs:
+  backport:
+    uses: dapr/.github/.github/workflows/backport.yaml@main
+    secrets:
+      dapr_bot_token: ${{ secrets.DAPR_BOT_TOKEN }}

.github/workflows/dapr-bot-automerge.yml

@@ -0,0 +1,26 @@
+#
+# Copyright 2026 The Dapr Authors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+name: dapr-bot-automerge
+
+on:
+  schedule:
+    - cron: '*/10 * * * *'
+  workflow_dispatch:
+jobs:
+  automerge:
+    uses: dapr/.github/.github/workflows/automerge.yaml@main
+    with:
+      maintainer-teams: maintainers-cli
+    secrets:
+      dapr_bot_token: ${{ secrets.DAPR_BOT_TOKEN }}

.github/workflows/dapr-bot-schedule.yml

@@ -0,0 +1,29 @@
+#
+# Copyright 2026 The Dapr Authors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+name: dapr-bot-stale
+
+on:
+  schedule:
+    - cron: '*/10 * * * *'
+  workflow_dispatch:
+jobs:
+  prune_stale:
+    uses: dapr/.github/.github/workflows/prune-stale.yaml@main
+    with:
+      days-before-pr-stale: 30      # default: 90
+      days-before-issue-stale: 30   # default: 90
+      days-before-pr-close: 7       # default: 7
+      days-before-issue-close: 7    # default: 7
+    secrets:
+      dapr_bot_token: ${{ secrets.DAPR_BOT_TOKEN }}