ci: 👷 add reusable workflow for publishing website (#5)

## Description

These changes add a workflow that build the website and publish it to
Netlify.


## Reviewer Focus

This PR needs a quick review.

.github/workflows/build-website.yml

@@ -0,0 +1,25 @@
+name: Build and deploy website
+
+on:
+  workflow_call:
+    secrets:
+      netlify-token:
+        required: true
+
+jobs:
+  build-deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Quarto
+        uses: quarto-dev/quarto-actions/setup@v2
+
+      # add software dependencies here
+
+      - name: Render and publish to Netlify
+        uses: quarto-dev/quarto-actions/publish@v2
+        with:
+          target: netlify
+          NETLIFY_AUTH_TOKEN: ${{ secrets.netlify-token }}