Add basic CI checks

.github/workflows/integration_checks.yaml

@@ -0,0 +1,74 @@
+# 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
+name: Integration Checks
+
+# because `main` is a protected branch this workflow is triggered when a PR 
+# is opened/updated and again when it is merged
+on:
+  push:
+    branches: 
+    - main
+  pull_request:
+    branches: 
+    - main
+
+jobs:
+  check-package:
+    # system dependencies for cannot be automatically resolved by 
+    # `r-lib/actions/setup-r@v2` for macos or windows - to avoid having to 
+    # maintain separate logic to infer and install system of those operating 
+    # systems we'll only run integration checks with the ubuntu
+    runs-on: ubuntu-latest
+
+    # run integration checks with R-release, R-devel, and R-oldrelease
+    strategy:
+      matrix:
+        r-version: ['release', 'devel', 'oldrel']
+
+    steps:
+      # pull the latest changes from the repository down to the runner
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # install R and any system dependencies
+      - name: Setup R
+        uses: r-lib/actions/setup-r@v2
+        with:
+          # install the R version specified by the current strategy
+          r-version: ${{ matrix.r-version }}
+          # specify additional repositories to pull dependencies not
+          # available on CRAN (i.e. `BPCells`)
+          extra-repositories: ${{ 'https://bnprks.r-universe.dev' }}
+
+      # install R dependencies
+      - name: Install Dependencies
+        uses: r-lib/actions/setup-r-dependencies@v2
+        with:
+          extra-packages: 
+            any::rcmdcheck
+            any::pkgdown
+          # installed packages are cached by default - force an upgrade to the 
+          # latest version of all dependencies
+          upgrade: 'TRUE'
+
+      # run CRAN checks - fails if any ERRORs or WARNINGs are raised in which 
+      # case the `rcmdcheck` output will be uploaded as an artifact
+      - name: Run Checks
+        uses: r-lib/actions/check-r-package@v2
+        env:
+            # suppress NOTEs that are accepted by CRAN
+            # see: https://www.rdocumentation.org/packages/rcmdcheck/versions/1.4.0/topics/rcmdcheck
+            _R_CHECK_PKG_SIZES_: false
+            _R_CHECK_RD_XREFS_: false
+            _R_CHECK_CRAN_INCOMING_NOTE_GNU_MAKE_: false
+            _R_CHECK_PACKAGE_DATASETS_SUPPRESS_NOTES_: true
+        continue-on-error: true
+
+      # build pkgdown site
+      - name: Build Website
+        run: | 
+          pkgdown::build_site_github_pages(
+            new_process = FALSE, 
+            install = FALSE
+          )
+        shell: Rscript {0}