Add GitHub Actions PR pipeline

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,28 @@
+<!--- Provide a general summary of your changes in the Title above -->
+
+## Description
+<!--- Describe your changes in detail -->
+
+## Motivation and Context
+<!--- Why is this change required? What problem does it solve? -->
+<!--- If it fixes an open issue, please link to the issue here. -->
+
+## How Has This Been Tested?
+<!--- Please describe in detail how you tested your changes. -->
+<!--- Include details of your testing environment, the tests you ran to -->
+<!--- see how your change affects other areas of the code, etc. -->
+
+## Screenshots (if appropriate):
+
+## Types of changes
+<!--- What types of changes does your code introduce? Put an `x` in all the boxes that apply: -->
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to change)
+
+## Checklist:
+<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
+- [ ] My code follows the code style of this project.
+- [ ] My change requires a change to the documentation.
+- [ ] I have updated the documentation accordingly.

.github/workflows/pull-request-workflow.yml

@@ -0,0 +1,18 @@
+name: Pull Request Workflow
+on: [pull_request]
+jobs:
+  run-tests:
+    runs-on: macOS-latest
+    timeout-minutes: 15
+    steps:
+    - name: Cancel previous jobs
+      uses: styfle/[email protected]
+      with:
+        access_token: ${{ github.token }}
+    - name: Git checkout
+      uses: actions/[email protected]
+      with:
+        fetch-depth: 0
+        ref: ${{ github.ref }}
+    - name: Run tests
+      run: swift test

Package.swift

@@ -5,6 +5,13 @@ import PackageDescription
 
 let package = Package(
     name: "TweakAccessorGenerator",
+    platforms: [
+        .macOS(.v10_14)
+    ],
+    products: [
+        .executable(name: "TweakAccessorGenerator",
+                    targets: ["TweakAccessorGenerator"])
+    ],
     dependencies: [
         .package(url: "https://github.com/apple/swift-argument-parser", from: "1.1.2")
     ],