adding presubmit.yml
diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
new file mode 100644
index 0000000..3914053
--- /dev/null
+++ b/.bazelci/presubmit.yml
@@ -0,0 +1,3 @@
+---
+build_targets: &build_targets
+  - "//..."