adapt class paths in composer.json to the newly refactored folder names

extension/composer.json

@@ -8,15 +8,15 @@
     "autoload": {
         "psr-4": {
             "qfq\\": ["qfq/",
-                "qfq/api/",
-                "qfq/external/",
-                "qfq/qfq/",
-                "qfq/qfq/database/",
-                "qfq/qfq/exceptions/",
-                "qfq/qfq/form/",
-                "qfq/qfq/helper/",
-                "qfq/qfq/report/",
-                "qfq/qfq/store/"]
+                "Source/api/",
+                "Source/external/",
+                "Source/core/",
+                "Source/core/database/",
+                "Source/core/exceptions/",
+                "Source/core/form/",
+                "Source/core/helper/",
+                "Source/core/report/",
+                "Source/core/store/"]
         }
     }
 }