Add plugin_lines_skipped option (#249)

source/plugins/lines/metadata.yml

@@ -13,3 +13,11 @@ inputs:
     description: Display lines of code metrics
     type: boolean
     default: no
+
+  # List of repositories that will be skipped
+  plugin_lines_skipped:
+    description: Repositories to skip
+    type: array
+    format: comma-separated
+    default: ""
+    example: my-repo-1, my-repo-2, owner/repo-3 ...