Added google androidpublisher/v3 api to verify google purchase tokens

server/google/dummy.go

@@ -0,0 +1,16 @@
+package google
+
+import (
+	"context"
+	_ "embed"
+)
+
+type DummyGoogleAPIClient struct{}
+
+func NewDummy() AndroidPublisherClient {
+	return &DummyGoogleAPIClient{}
+}
+
+func (d DummyGoogleAPIClient) GetProductPurchase(ctx context.Context, packageName string, productId string, token string) (*ProductPurchase, error) {
+	return nil, nil // = purchase not found
+}