Add automated build workflow

.github/workflows/package_check.yml

@@ -0,0 +1,18 @@
+name: R Build and Checks
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+        - uses: actions/checkout@v4
+        - uses: r-lib/actions/setup-r@v2
+        - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+            extra-packages: any::rcmdcheck
+            needs: check
+        - uses: r-lib/actions/check-r-package@v2
+        with:
+            args: 'c("--no-manual", "--as-cran")'
+            error-on: '"error"'
+            check-dir: '"check"'