fix: runtime errors

music_kraken/utils/enums/__init__.py

@@ -14,10 +14,11 @@ class SourceType:
     page_type: Type[Page] = None
     page: Page = None
 
+    def register_page(self, page: Page):
+        self.page = page
 
-    def register_page(self, page_type: Type[Page]):
-        self.page_type = page
-        self.page = page_type()
+    def __hash__(self):
+        return hash(self.name)
 
     @property
     def has_page(self) -> bool: