add basic rcmdcheck workflow

.Rbuildignore

@@ -3,3 +3,4 @@
 ^LICENSE\.md$
 ^src/\.cargo$
 ^src/rust/vendor$
+^\.github$

.github/.gitignore

@@ -0,0 +1 @@
+*.html

.github/workflows/R-CMD-check.yaml

@@ -0,0 +1,34 @@
+# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
+# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+name: R-CMD-check
+
+permissions: read-all
+
+jobs:
+  R-CMD-check:
+    runs-on: ubuntu-22.04
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+      R_KEEP_PKG_SOURCE: yes
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: r-lib/actions/setup-r@v2
+        with:
+          use-public-rspm: true
+
+      - uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: any::rcmdcheck
+          needs: check
+
+      - uses: r-lib/actions/check-r-package@v2
+        with:
+          upload-snapshots: true
+          build_args: 'c("--no-manual","--compact-vignettes=gs+qpdf")'

README.md

@@ -0,0 +1,7 @@
+ostype
+======
+
+ <!-- badges: start -->
+  [![R-CMD-check](https://github.com/A2-ai/osinfo/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/A2-ai/osinfo/actions/workflows/R-CMD-check.yaml)
+  <!-- badges: end -->
+