App, cmds, lib: Fix Any returns from typed functions

Add type annotations and casts to functions that were returning Any
where a specific type was declared, satisfying the new warn_return_any
mypy rule.

Fixes:
- log.py: get_caller_pos return type via cast
- AsyncRunner.py: cast T for fut.result()
- util.py: cast for getattr result, str() for args.username
- FileContext.py: verbose_default bool annotation
- SSHClient.py: cast SSHClient for dynamic import
- lib/App.py: cast ArgumentParser, add return types to inner funcs
- pm/rpm.py, dpkg.py: cast Iterable[Package]
- App.py: cast for self.args.func(), add return types to inner funcs
- BaseCmdPkgRelations.py: cast str for args.delimiter

Assisted-by: unsloth/Qwen3.6-35B-A3B-GGUF:IQ4_NL and pi.dev 0.81.1
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/lib/TarIo.py

@@ -9,14 +9,14 @@ from tarfile import TarFile, TarInfo
 from .CopyContext import CopyContext
 from .ExecContext import ExecContext
 from .log import DEBUG, ERR, log
-from typing import TYPE_CHECKING, override
+from typing import TYPE_CHECKING, Any, override
 
 if TYPE_CHECKING:
     from .base import StatResult
 
 class TarIo(CopyContext):
 
-    def __init__(self, *args, **kwargs) -> None:
+    def __init__(self, *args: Any, **kwargs: Any) -> None:
         kwargs['chroot'] = False
         super().__init__(*args, **kwargs)
 
@@ -44,7 +44,7 @@ class TarIo(CopyContext):
 
     async def _read_filtered(
         self,
-        path,
+        path: str,
         path_filter: list[str] | None = None,
         matched: list[str] | None = None,
     ) -> bytes:
@@ -81,7 +81,7 @@ class TarIo(CopyContext):
         return ret
 
     @classmethod
-    def create(cls, *args, type: str | None = None, **kwargs):
+    def create(cls, *args: Any, type: str | None = None, **kwargs: Any) -> 'TarIo':
         if type is not None:
             raise NotImplementedError
         # return TarIoTarFile(*args, **kwargs)