Expand dot gitignore

Add cscope and vim swap files Bug: 190219048 Test: vim Tag: #refactor Change-Id: Ib91792f9a60e3965f6916c891d349d28bf08e276

Expand dot gitignore
6c411745 · Chris Manton · e07e8765 · 6c411745
Commit 6c411745 authored 3 years ago by Chris Manton
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,6 @@ third_party/
 target/
 Cargo.lock
 tags
+cscope.out
+cscope.files
+*.sw?