Merge #1115

1115: Add .gitattributes for fix Windows Line-ending problem in `generated_grammar_is_fresh` r=matklad a=edwin0cheng

Although #937 is marked as `Closed` . But it should work without setting `core.autocrlf` to `false` by this PR.

Co-authored-by: Edwin Cheng <[email protected]>

Author: bors[bot]

.gitattributes

@@ -0,0 +1 @@
+crates/ra_syntax/tests/data/** -text