ruff_python_formatter: add CRLF test

This test ensures that CRLF line endings are set correctly within a
reformatted code snippet.

Author: BurntSushi

.gitattributes

@@ -3,5 +3,8 @@
 crates/ruff_linter/resources/test/fixtures/isort/line_ending_crlf.py text eol=crlf
 crates/ruff_linter/resources/test/fixtures/pycodestyle/W605_1.py text eol=crlf
 
+crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_crlf.py text eol=crlf
+crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_crlf.py.snap text eol=crlf
+
 ruff.schema.json linguist-generated=true text=auto eol=lf
 *.md.snap linguist-language=Markdown

crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_crlf.options.json

@@ -0,0 +1,8 @@
+[
+  {
+    "docstring_code": "enabled",
+    "indent_style": "space",
+    "indent_width": 4,
+    "line_ending": "CarriageReturnLineFeed"
+  }
+]

crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_crlf.py

@@ -0,0 +1,9 @@
+def doctest_line_ending():
+    """
+    Do cool stuff.
+    >>> def foo( x ):
+    ...     print( x )
+    ...
+    ...     print( x )
+    """
+    pass

crates/ruff_python_formatter/tests/snapshots/format@docstring_code_examples_crlf.py.snap

@@ -0,0 +1,44 @@
+---
+source: crates/ruff_python_formatter/tests/fixtures.rs
+input_file: crates/ruff_python_formatter/resources/test/fixtures/ruff/docstring_code_examples_crlf.py
+---
+## Input
+```python
+def doctest_line_ending():
+    """
+    Do cool stuff.
+    >>> def foo( x ):
+    ...     print( x )
+    ...
+    ...     print( x )
+    """
+    pass
+```
+
+## Outputs
+### Output 1
+```
+indent-style            = space
+line-width              = 88
+indent-width            = 4
+quote-style             = Double
+line-ending             = CarriageReturnLineFeed
+magic-trailing-comma    = Respect
+docstring-code          = Enabled
+preview                 = Disabled
+```
+
+```python
+def doctest_line_ending():
+    """
+    Do cool stuff.
+    >>> def foo(x):
+    ...     print(x)
+    ...
+    ...     print(x)
+    """
+    pass
+```
+
+
+