Create basic GitHub action workflow

.github/workflows/presubmit.yml

@@ -0,0 +1,37 @@
+name: Go
+on: [pull_request]
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.12
+      uses: actions/setup-go@v1
+      with:
+        go-version: 1.12
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v1
+
+    - name: Get kubebuilder
+      run: |
+        version=1.0.8 # latest stable version
+        arch=amd64
+
+        # download the release
+        curl -L -O "https://github.com/kubernetes-sigs/kubebuilder/releases/download/v${version}/kubebuilder_${version}_darwin_${arch}.tar.gz"
+
+        # extract the archive
+        tar -zxvf kubebuilder_${version}_darwin_${arch}.tar.gz
+        mv kubebuilder_${version}_darwin_${arch} kubebuilder && sudo mv kubebuilder /usr/local/
+
+        # update your PATH to include /usr/local/kubebuilder/bin
+        export PATH=$PATH:/usr/local/kubebuilder/bin
+
+    - name: Run tests
+      run: |
+        export GOPATH=$(go env GOPATH)
+        make test