add github actions to sync with asana

 - sync issues to asana
 - link PRs to tasks (if a task is specified in the PR description)
 - add comment to task if PR was approved
 - add comment to task if PR was merged (optional: mark task as completed)

.github/workflows/asana-link-pr-to-task.yml

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+on:
+  pull_request:
+    types: [opened, reopened]
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Add comment in Asana task
+        uses: duckduckgo/[email protected]
+        with:
+          asana-pat: ${{ secrets.GH_ASANA_SECRET }}
+          trigger-phrase: 'STORY:'
+          action: 'add-asana-comment'

.github/workflows/asana-notify-approved.yml

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+name: Pull Request Reviewed
+
+on:
+  pull_request_review:
+    types: [submitted]
+
+jobs:
+  pr-reviewed:
+    if: github.event.review.state == 'approved'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Update Asana task -> PR approved
+        uses: duckduckgo/[email protected]
+        with:
+          asana-pat: ${{ secrets.GH_ASANA_SECRET }}
+          trigger-phrase: "STORY:"
+          action: 'notify-pr-approved'

.github/workflows/asana-notify-merged.yml

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+on:
+  pull_request:
+    types: [closed]
+
+jobs:
+  add-pr-merged-comment:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: duckduckgo/[email protected]
+        if: github.event.pull_request.merged
+        with:
+          asana-pat: ${{ secrets.GH_ASANA_SECRET }}
+          trigger-phrase: 'STORY:'
+          action: 'notify-pr-merged'
+          is-complete: false

.github/workflows/asana-sync-issues.yml

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+on:
+  issues:
+    types: [opened, reopened]
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: duckduckgo/[email protected]
+        with:
+          asana-pat: ${{ secrets.GH_ASANA_SECRET }}
+          asana-project: ${{ vars.GH_ASANA_PROJECT_ID }}
+          action: 'create-asana-issue-task'

changelog/_1113.md

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+### Added
+
+- add github workflow to
+  - sync issues to asana
+  - link PRs to tasks (if a task is specified in the PR description)
+  - add comment to task if PR was approved
+  - add comment to task if PR was merged (optional: mark task as completed)