Add license note an scan directory for PHPStan

.phpstan.neon

@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2010 - 2024 the Friendica project
+#
+# SPDX-License-Identifier: CC0-1.0
+
 parameters:
     level: 0
 
@@ -7,3 +11,4 @@ parameters:
     scanDirectories:
         - mod
         - vendor
+        - view