[aur] initial retrievement of update requirements implementation

bauh/api/abstract/controller.py

@@ -90,6 +90,15 @@ class SoftwareManager(ABC):
         """
         return pkgs
 
+    def get_update_requirements(self, pkgs: List[SoftwarePackage], watcher: ProcessWatcher) -> List[SoftwarePackage]:
+        """
+        return additional required software that needs to be installed before updating a list of packages
+        :param pkgs:
+        :param watcher
+        :return:
+        """
+        return []
+
     @abstractmethod
     def update(self, pkg: SoftwarePackage, root_password: str, watcher: ProcessWatcher) -> bool:
         """