deprecate init/repo-init command

In current workflow you need to run setup to run init (because of
repository name), but you need to run init before setup (because of
repository tree rights).

New solution just add `Repo.init()` method call to setup subcommand
after config reload to make sure that repository name has been applied.
In addition chown method as well as setuid method for check_output have
been added.

src/ahriman/core/util.py

@@ -27,10 +27,11 @@ from pathlib import Path
 from typing import Any, Dict, Generator, Iterable, Optional, Union
 
 from ahriman.core.exceptions import InvalidOption, UnsafeRun
+from ahriman.models.repository_paths import RepositoryPaths
 
 
 def check_output(*args: str, exception: Optional[Exception], cwd: Optional[Path] = None,
-                 input_data: Optional[str] = None, logger: Optional[Logger] = None) -> str:
+                 input_data: Optional[str] = None, logger: Optional[Logger] = None, user: Optional[int] = None) -> str:
     """
     subprocess wrapper
     :param args: command line arguments
@@ -38,12 +39,15 @@ def check_output(*args: str, exception: Optional[Exception], cwd: Optional[Path]
     :param cwd: current working directory
     :param input_data: data which will be written to command stdin
     :param logger: logger to log command result if required
+    :param user: run process as specified user
     :return: command output
     """
     try:
         # universal_newlines is required to read input from string
+        # FIXME additional workaround for linter and type check which do not know that user arg is supported
+        # pylint: disable=unexpected-keyword-arg
         result: str = subprocess.check_output(args, cwd=cwd, input=input_data, stderr=subprocess.STDOUT,
-                                              universal_newlines=True).strip()
+                                              universal_newlines=True, user=user).strip()  # type: ignore
         if logger is not None:
             for line in result.splitlines():
                 logger.debug(line)
@@ -55,18 +59,18 @@ def check_output(*args: str, exception: Optional[Exception], cwd: Optional[Path]
         raise exception or e
 
 
-def check_user(root: Path, unsafe: bool) -> None:
+def check_user(paths: RepositoryPaths, unsafe: bool) -> None:
     """
     check if current user is the owner of the root
-    :param root: root directory (i.e. ahriman home)
+    :param paths: repository paths object
     :param unsafe: if set no user check will be performed before path creation
     """
-    if not root.exists():
+    if not paths.root.exists():
         return  # no directory found, skip check
     if unsafe:
         return  # unsafe flag is enabled, no check performed
     current_uid = os.getuid()
-    root_uid = root.stat().st_uid
+    root_uid, _ = paths.root_owner
     if current_uid != root_uid:
         raise UnsafeRun(current_uid, root_uid)