add github action

.github/workflows/update-data.yml

@@ -0,0 +1,39 @@
+name: Update data
+
+on:
+   # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [ main, master ]
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - name: Install dependencies
+        run: |
+          install.packages(c("attachment", "dplyr", "tidyr", "stringr", "writexl"))
+        shell: Rscript {0}
+
+      - name: Update data
+        run: |
+          source("data/make-data.R")
+        shell: Rscript {0}
+
+      - name: Commit files
+        run: |
+          git config --local user.email "[email protected]"
+          git config --local user.name "GitHub Actions"
+          git add --all
+          git commit -am "add data" || exit 0
+          git push