kernelshark: add .gitignore for generated/build files

Not having a .gitignore will bloat git listings.
Created a .gitignore for all build artifacts.

Signed-off-by: Mircea Cirjaliu <mircea.cirjaliu@yahoo.com>
Signed-off-by: Yordan Karadzhov <y.karadz@gmail.com>
1 file changed