Add CI github action for testing on push and PR

Signed-off-by: Kathryn Baldauf <kabaldau@microsoft.com>

.github/workflows/ci.yml

@@ -0,0 +1,12 @@
+name: CI 
+on:
+  - push
+  - pull_request
+
+jobs: 
+  test:
+    runs-on: 'windows-2019'
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-go@v2
+      - run: go test -gcflags=all=-d=checkptr -v ./...