peer-or-repo: move the object setup in its own function

The `_peerorrepo` function is problematic, because it can build different types
of object (repository and peer). This make it hard to adjust the arguments to
the type of object we needs. So this patch start a series of change to create
peer and repo without going through a common function.

We move the part of the function doing object setup it its own function to make
it simpler to reuse in others contexts.

mercurial/hg.py

@@ -181,9 +181,13 b' def _peerorrepo('
     ui, path, create=False, presetupfuncs=None, intents=None, createopts=None
 ):
     """return a repository object for the specified path"""
-    obj = _peerlookup(path).instance(
-        ui, path, create, intents=intents, createopts=createopts
-    )
+    cls = _peerlookup(path)
+    obj = cls.instance(ui, path, create, intents=intents, createopts=createopts)
+    _setup_repo_or_peer(ui, obj, presetupfuncs)
+    return obj
+
+
+def _setup_repo_or_peer(ui, obj, presetupfuncs=None):
     ui = getattr(obj, "ui", ui)
     for f in presetupfuncs or []:
         f(ui, obj)
@@ -195,14 +199,12 b' def _peerorrepo('
             if hook:
                 with util.timedcm('reposetup %r', name) as stats:
                     hook(ui, obj)
-                ui.log(
-                    b'extension', b'  > reposetup for %s took %s\n', name, stats
-                )
+                msg = b'  > reposetup for %s took %s\n'
+                ui.log(b'extension', msg, name, stats)
     ui.log(b'extension', b'> all reposetup took %s\n', allreposetupstats)
     if not obj.local():
         for f in wirepeersetupfuncs:
             f(ui, obj)
-    return obj
 
 
 def repository(