Adding R setup

Author: joeytakeda

.github/workflows/build.yml

@@ -26,6 +26,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+      - name: Setup R
+        uses: r-lib/actions/setup-r@v2
       # - name: Setup Node
       #   uses: actions/setup-node@v4
       #   with: