Introduce a new CST element for slice segments (#3195)

crates/ruff_python_formatter/src/snapshots/ruff_python_formatter__tests__black_test__expression_py.snap

@@ -292,7 +292,7 @@ last_call()
  }
  Python3 > Python2 > COBOL
  Life is Life
-@@ -138,33 +141,33 @@
+@@ -138,15 +141,15 @@
  very_long_variable_name_filters: t.List[
      t.Tuple[str, t.Union[str, t.List[t.Optional[str]]]],
  ]
@@ -315,37 +315,6 @@ last_call()
  slice[0]
  slice[0:1]
  slice[0:1:2]
--slice[:]
-+slice[::]
- slice[:-1]
--slice[1:]
-+slice[1::]
- slice[::-1]
- slice[d :: d + 1]
- slice[:c, c - 1]
- numpy[:, 0:1]
- numpy[:, :-1]
--numpy[0, :]
-+numpy[0, ::]
- numpy[:, i]
- numpy[0, :2]
- numpy[:N, 0]
- numpy[:2, :4]
- numpy[2:4, 1:5]
--numpy[4:, 2:]
-+numpy[4:, 2::]
- numpy[:, (0, 1, 2, 5)]
- numpy[0, [0]]
- numpy[:, [i]]
-@@ -172,7 +175,7 @@
- numpy[-(c + 1) :, d]
- numpy[:, l[-2]]
- numpy[:, ::-1]
--numpy[np.newaxis, :]
-+numpy[np.newaxis, ::]
- (str or None) if (sys.version_info[0] > (3,)) else (str or bytes or None)
- {"2.7": dead, "3.7": long_live or die_hard}
- {"2.7", "3.6", "3.7", "3.8", "3.9", "4.0" if gilectomy else "3.10"}
 @@ -201,30 +204,26 @@
  e = (1,).count(1)
  f = 1, *range(10)
@@ -600,21 +569,21 @@ xxxx_xxx_xxxx_xxxxx_xxxx_xxx: Callable[..., List[SomeClass]] = (
 slice[0]
 slice[0:1]
 slice[0:1:2]
-slice[::]
+slice[:]
 slice[:-1]
-slice[1::]
+slice[1:]
 slice[::-1]
 slice[d :: d + 1]
 slice[:c, c - 1]
 numpy[:, 0:1]
 numpy[:, :-1]
-numpy[0, ::]
+numpy[0, :]
 numpy[:, i]
 numpy[0, :2]
 numpy[:N, 0]
 numpy[:2, :4]
 numpy[2:4, 1:5]
-numpy[4:, 2::]
+numpy[4:, 2:]
 numpy[:, (0, 1, 2, 5)]
 numpy[0, [0]]
 numpy[:, [i]]
@@ -622,7 +591,7 @@ numpy[1 : c + 1, c]
 numpy[-(c + 1) :, d]
 numpy[:, l[-2]]
 numpy[:, ::-1]
-numpy[np.newaxis, ::]
+numpy[np.newaxis, :]
 (str or None) if (sys.version_info[0] > (3,)) else (str or bytes or None)
 {"2.7": dead, "3.7": long_live or die_hard}
 {"2.7", "3.6", "3.7", "3.8", "3.9", "4.0" if gilectomy else "3.10"}