Add manual CI action for custom wheels

.github/workflows/nmodl-wheel.yml

@@ -0,0 +1,57 @@
+name: Build custom wheels
+
+concurrency:
+  group: ${{ github.workflow }}#${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macOS-13]
+
+    steps:
+      - name: Setup Flex and Bison
+        # reserved for future use
+        if: runner.os == 'Windows'
+        run: |
+          choco install winflexbison3 -y
+
+      - name: Setup Flex and Bison
+        if: runner.os == 'macOS'
+        run: |
+          brew install flex bison
+
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch: 0
+
+      # Used to host cibuildwheel
+      - name: Set up Python
+        uses: actions/setup-python@v3
+
+      - name: Install cibuildwheel
+        run: python -m pip install cibuildwheel==2.16.5
+
+      - name: Build all wheels
+        run: |
+          export SETUPTOOLS_SCM_PRETEND_VERSION="$(git describe --tags | cut -d '-' -f 1,2 | tr - .)"
+          python -m cibuildwheel --output-dir wheelhouse
+        env:
+          CIBW_ARCHS: 'universal2'
+
+      - name: Upload wheels
+        uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}
+          path: ./wheelhouse/*.whl