ci: add new issues and pull requests to project board (electron#248)

Author: dsanders11

.github/workflows/add-to-project.yml

@@ -0,0 +1,29 @@
+name: Add to Ecosystem WG Project
+
+on:
+  issues:
+    types:
+      - opened
+  pull_request_target:
+    types:
+      - opened
+
+permissions: {}
+
+jobs:
+  add-to-project:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Generate GitHub App token
+        uses: electron/github-app-auth-action@384fd19694fe7b6dcc9a684746c6976ad78228ae # v1.1.1
+        id: generate-token
+        with:
+          creds: ${{ secrets.ECOSYSTEM_ISSUE_TRIAGE_GH_APP_CREDS }}
+          org: electron
+      - name: Add to Project
+        uses: dsanders11/project-actions/add-item@a24415515fa60a22f71f9d9d00e36ca82660cde9 # v1.0.1
+        with:
+          field: Opened
+          field-value: ${{ github.event.pull_request.created_at || github.event.issue.created_at }}
+          project-number: 89
+          token: ${{ steps.generate-token.outputs.token }}