Update `.gitignore` list

VSCode project shouldn't be tracked by version control.

Test: none
Change-Id: Ia8a05248347dd8dc2d82724c24c8c01f5108999f
diff --git a/.gitignore b/.gitignore
index 1062418..75db548 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .idea/
+*.code-workspace
 *.iml