Add workflow to check pyfftw

.github/workflows/pyfftw-actions.yml

@@ -0,0 +1,66 @@
+name: Check pyFFTW
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 14 * * *'  # 2pm UTC == 9am EST
+jobs:
+  check_pyfftw:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
+    steps:
+      - name: Checkout STUMPY
+        uses: actions/checkout@v4
+        with:
+          repository: stumpy-dev/stumpy
+
+      - name: Get Required Python Version
+        id: python
+        run: |
+          python -m pip install pandas packaging lxml
+          echo "version=$(python ./versions.py -pkg pyfftw)" >> $GITHUB_OUTPUT
+        shell: bash
+
+      # Checkout python version
+      - name: Set Up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "${{ steps.python.outputs.version }}"
+
+      - name: Display Python Version
+        run: python -c "import sys; print(sys.version)"
+        shell: bash
+
+      - name: Set Up Pixi
+        uses: prefix-dev/setup-pixi@v0.9.4
+        with:
+          pixi-version: v0.62.2
+
+      - name: Set Up Python
+        run: pixi add python="${{ steps.python.outputs.version }}"
+        shell: bash
+
+      - name: Install Conda-Forge STUMPY from source
+        run: pixi add stumpy 
+
+      - name: Install FFTW and pyFFTW
+        run: pixi add fftw pyfftw
+        shell: bash
+
+      - name: Display Python Version
+        run: pixi run python -c "import sys; print(sys.version)"
+        shell: bash
+
+      - name: Show Full Numba Environment
+        run: pixi run python -m numba -s
+        shell: bash
+
+      - name: Show installed packages fftw and pyfftw
+        run: pixi list | grep -E 'fftw|pyfftw'
+        shell: bash
+
+      - name: Run Unit Tests
+        run: pixi run bash ./test.sh unit
+        shell: bash