remove local composer and npm metadata files and put them in .gitignore

Signed-off-by: Julien Veyssier <eneiluj@posteo.net>

Author: Julien Veyssier

.gitignore

@@ -15,6 +15,10 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 package-json.log*
+package-lock.json*
+
+### Php ###
+composer.lock*
 
 # Runtime data
 pids