main: Adding github CI workflow.

.github/workflows/r.yml

@@ -0,0 +1,32 @@
+name: R CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        r-version: ['3.6.3', '4.1.1']
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up R ${{ matrix.r-version }}
+        uses: r-lib/actions/setup-r@f57f1301a053485946083d7a45022b278929a78a
+        with:
+          r-version: ${{ matrix.r-version }}
+      - name: Install dependencies
+        run: |
+          install.packages(c("remotes", "rcmdcheck"))
+          remotes::install_deps(dependencies = TRUE)
+        shell: Rscript {0}
+      - name: Check
+        run: rcmdcheck::rcmdcheck(args = "--no-manual", error_on = "error")
+        shell: Rscript {0}