feat(types[ConfigStyle]) Add ConfigStyle enum and RawRepoEntry alias

why: Centralize the three config output styles (concise, standard,
verbose) as a typed enum so all commands share the same vocabulary.
what:
- Add ConfigStyle enum with CONCISE, STANDARD, VERBOSE values
- Add RawRepoEntry TypeAlias (str | dict[str, Any])

Author: tony

src/vcspull/types.py

@@ -29,6 +29,7 @@
 
 from __future__ import annotations
 
+import enum
 import pathlib
 import typing as t
 from typing import TypeAlias
@@ -40,6 +41,26 @@
     from libvcs.sync.git import GitSyncRemoteDict
 
 
+class ConfigStyle(enum.Enum):
+    """Output style for repository entries in vcspull configuration files.
+
+    Examples
+    --------
+    >>> from vcspull.types import ConfigStyle
+    >>> ConfigStyle("concise")
+    <ConfigStyle.CONCISE: 'concise'>
+    >>> ConfigStyle.STANDARD.value
+    'standard'
+    """
+
+    CONCISE = "concise"
+    STANDARD = "standard"
+    VERBOSE = "verbose"
+
+
+RawRepoEntry: TypeAlias = "str | dict[str, t.Any]"
+
+
 class RawConfigDict(t.TypedDict):
     """Configuration dictionary without any type marshalling or variable resolution."""