Set up automation for new triage board

.github/workflows/triage-incoming.yml

@@ -13,3 +13,25 @@ jobs:
           project: Issue triage
           column: Incoming
           repo-token: ${{ secrets.ELEMENT_BOT_TOKEN }}
+
+  add_to_triage:
+    runs-on: ubuntu-latest
+    if: >
+      github.repository == 'vector-im/element-x-ios'
+    steps:
+      - uses: octokit/graphql-action@v2.x
+        with:
+          headers: '{"GraphQL-Features": "projects_next_graphql"}'
+          query: |
+            mutation add_to_project($projectid:ID!,$contentid:ID!) {
+              addProjectV2ItemById(input: {projectId: $projectid contentId: $contentid}) {
+                item {
+                  id
+                }
+              }
+            }
+          projectid: ${{ env.PROJECT_ID }}
+          contentid: ${{ github.event.issue.node_id }}
+        env:
+          PROJECT_ID: "PVT_kwDOAM0swc4AMlHr"
+          GITHUB_TOKEN: ${{ secrets.ELEMENT_BOT_TOKEN }}