feat: added Laravel 6

Author: yevhenlisovenko

composer.json

@@ -22,7 +22,7 @@
 	"homepage": "https://github.com/awes-io/repository",
 	"keywords": ["Laravel", "Repository", "pattern", "filters", "criteria", "scope", "php"],
     "require": {
-        "illuminate/support": "~5"
+        "illuminate/support": "~5|~6"
     },
     "require-dev": {
 		"phpunit/phpunit": "~7.0",