Add GitHub Action based CI test

Change-Id: I4d49df276377b1750c7bfd684f75190c7f5434e6
diff --git a/.gitignore b/.gitignore
index b0955d2..e741c16 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@
 *~
 .*
 !.gitignore
-/sandbox
\ No newline at end of file
+!.github
+/sandbox