CI: add ci for testing the pdf pack

Author: cadenmyers13

.github/workflows/test-pdf-pack.yml

@@ -0,0 +1,61 @@
+name: Test PDF Pack Scripts
+
+on:
+  push:
+    branches: main
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  test-conda:
+    name: conda-${{ matrix.python-version }}-${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.11, 3.12, 3.13] # requires manual update
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up conda
+        uses: conda-incubator/setup-miniconda@v3
+        with:
+          python-version: ${{ matrix.python-version }}
+          channels: conda-forge
+      - name: Install diffpy.cmi
+        run: |
+          conda install -y diffpy.cmi
+      - name: Run diffpy.cmi scripts from docs/examples
+        shell: bash
+        run: |
+          set -e
+          export MPLBACKEND=Agg
+          for script in docs/examples/ch*/solutions/diffpy-cmi/*.py; do
+            python "$script"
+          done
+
+  test-pip:
+    name: pip-${{ matrix.python-version }}-${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        python-version: [3.11, 3.12, 3.13] # requires manual update
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install diffpy.cmi (pip)
+        run: |
+          python -m pip install --upgrade pip
+          pip install diffpy.cmi
+      - name: Run diffpy.cmi scripts from docs/examples
+        shell: bash
+        run: |
+          set -e
+          export MPLBACKEND=Agg
+          for script in docs/examples/ch*/solutions/diffpy-cmi/*.py; do
+            python "$script"
+          done