Code Clean up, more testing

Remove unused code and classes.
Clean up code to remove all named constant from them and throw
deprecation alerts if used.
Add basic psalm setup in root folder and remove from www folder

www/lib/CoreLibs/Debug/FileWriter.php

@@ -75,6 +75,11 @@ class FileWriter
 			empty(self::$debug_folder) &&
 			defined('BASE') && defined('LOG')
 		) {
+			/** @deprecated Do not use this anymore, define path with fsetFolder */
+			trigger_error(
+				'fsetFolder must be set first. Setting via LOG_FILE_ID and LOg constants is deprecated',
+				E_USER_DEPRECATED
+			);
 			self::$debug_folder = BASE . LOG;
 		}
 		if (!is_writeable(self::$debug_folder)) {