options: fix imports

- group imports properly
- dont import from typing and import typing

mesonbuild/options.py

@@ -7,6 +7,7 @@ from collections import OrderedDict
 from itertools import chain
 from functools import total_ordering
 import argparse
+import typing as T
 
 from .mesonlib import (
     HoldableObject,
@@ -24,12 +25,8 @@ from .mesonlib import (
     listify_array_value,
     MachineChoice,
 )
-
 from . import mlog
 
-import typing as T
-from typing import ItemsView
-
 DEFAULT_YIELDING = False
 
 # Can't bind this near the class method it seems, sadly.
@@ -755,7 +752,7 @@ class OptionStore:
     def values(self):
         return self.d.values()
 
-    def items(self) -> ItemsView['OptionKey', 'UserOption[T.Any]']:
+    def items(self) -> T.ItemsView['OptionKey', 'UserOption[T.Any]']:
         return self.d.items()
 
     # FIXME: this method must be deleted and users moved to use "add_xxx_option"s instead.