Add --as-cran for R CMD check (#89)

Author: cicdguy

.github/workflows/check.yaml

@@ -24,6 +24,10 @@ jobs:
     uses: insightsengineering/r.pkg.template/.github/workflows/build-check-install.yaml@main
     secrets:
       REPO_GITHUB_TOKEN: ${{ secrets.PHARMAVERSE_BOT }}
+    with:
+      additional-r-cmd-check-params: --as-cran
+      additional-env-vars: |
+        _R_CHECK_CRAN_INCOMING_REMOTE_=false
   coverage:
     name: Coverage 📔
     uses: insightsengineering/r.pkg.template/.github/workflows/test-coverage.yaml@main