AUR bearhub: fix stale source cache collision (pkgrel=10)

Use tag-specific tarball name bearhub-0.10.7-bearhub.6.tar.gz so makepkg
and AUR helpers do not reuse an outdated bearhub-0.10.7.tar.gz from cache.
Ignore makepkg artifacts under packaging/aur/.

bauh/api/abstract/download.py

@@ -1,47 +0,0 @@
-from abc import ABC, abstractmethod
-from typing import Iterable, List, Optional, Tuple
-
-from bauh.api.abstract.handler import ProcessWatcher
-
-
-class FileDownloader(ABC):
-
-    @abstractmethod
-    def download(self, file_url: str, watcher: Optional[ProcessWatcher], output_path: str, cwd: str, root_password: Optional[str] = None, substatus_prefix: str = None, display_file_size: bool = True, max_threads: int = None, known_size: int = None) -> bool:
-        """
-        :param file_url:
-        :param watcher:
-        :param output_path: the downloaded file output path. Leave None for the current directory and the same file name
-        :param cwd: current working directory. Leave None if does not matter.
-        :param root_password: (if the output directory is protected)
-        :param substatus_prefix: custom substatus prefix ('prefix downloading xpto')
-        :param display_file_size: if the file size should be displayed on the substatus
-        :param max_threads: maximum number of threads (only available for multi-threaded download)
-        :param known_size: known file size
-        :return: success / failure
-        """
-        pass
-
-    @abstractmethod
-    def is_multithreaded(self) -> bool:
-        pass
-
-    @abstractmethod
-    def can_work(self) -> bool:
-        pass
-
-    @abstractmethod
-    def get_supported_multithreaded_clients(self) -> Tuple[str, ...]:
-        pass
-
-    @abstractmethod
-    def is_multithreaded_client_available(self, name: str) -> bool:
-        pass
-
-    @abstractmethod
-    def list_available_multithreaded_clients(self) -> Tuple[str, ...]:
-        pass
-
-    @abstractmethod
-    def get_supported_clients(self) -> Tuple[str, ...]:
-        pass