Add .index-build to .gitignore (swiftlang#77977)

MaxDesiatov · web-flow · commit eeb8412676e5 · 2024-12-05T10:05:24.000-08:00
The `.index-build` directory is created by SourceKit-LSP when background indexing is enabled, contains auto-generated transient files similar in purpose to `.build`, and it should be ignored.
diff --git a/.gitignore b/.gitignore
@@ -52,6 +52,7 @@ docs/_build
 
 # SwiftPM
 .build
+.index-build
 .swiftpm
 
 #==============================================================================#
