feat(release): add draft GitHub release flow

.github/workflows/release-notes-sync.yml

@@ -19,6 +19,11 @@ on:
         required: false
         default: false
         type: boolean
+      draft:
+        description: "Create missing release as draft."
+        required: false
+        default: false
+        type: boolean
 
 concurrency:
   group: release-notes-sync-${{ github.event_name == 'workflow_dispatch' && github.event.inputs.tag || github.ref }}
@@ -43,6 +48,7 @@ jobs:
           REF: ${{ github.ref }}
           INPUT_TAG: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/') && github.ref_name || github.event.inputs.tag }}
           INPUT_CREATE_IF_MISSING: ${{ github.event.inputs.create_if_missing }}
+          INPUT_DRAFT: ${{ github.event.inputs.draft }}
         shell: bash
         run: |
           set -euo pipefail
@@ -64,4 +70,8 @@ jobs:
             args+=(--create-if-missing)
           fi
 
+          if [ "${INPUT_DRAFT:-false}" = "true" ]; then
+            args+=(--draft)
+          fi
+
           node scripts/sync-release-notes-from-changelog.mjs "${args[@]}"