add R-CMD-check 🐱

.github/.gitignore

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+*.html

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

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+# 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, master]
+  pull_request:
+    branches: [main, master]
+
+name: R-CMD-check
+
+jobs:
+  R-CMD-check:
+    runs-on: ubuntu-latest
+    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

README.md

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 <!-- badges: start -->
 
 [![Lifecycle: experimental](https://img.shields.io/badge/lifecycle-experimental-orange.svg)](https://www.tidyverse.org/lifecycle/#experimental)
-
+[![R-CMD-check](https://github.com/hypebright/fireworks/actions/workflows/R-CMD-check.yaml/badge.svg)](https://github.com/hypebright/fireworks/actions/workflows/R-CMD-check.yaml)
 <!-- badges: end -->
 
 Wrapper around the [fireworks-js](https://fireworks.js.org) lib that can be used in Shiny ✨