Add github action to build package

Skipping Windows due to a build issue reporting that ITK source path
is too long.

Author: blowekamp

.github/workflows/main.yml

@@ -0,0 +1,38 @@
+name: Python Test and Package
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        python-version: ['3.7', '3.10']
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        submodules: true
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install tools
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install build
+    - name: Build Package
+      run: |
+        python -m build
+    - name: List
+      run: |
+        ls -la dist