Re-sync with internal repository (#2)

Co-authored-by: Facebook Community Bot <6422482+facebook-github-bot@users.noreply.github.com>

Author: facebook-github-bot

.rustfmt.toml

@@ -0,0 +1,8 @@
+# Get help on options with `rustfmt --help=config`
+# Please keep these in alphabetical order.
+edition = "2021"
+group_imports = "StdExternalCrate"
+imports_granularity = "Item"
+merge_derives = false
+use_field_init_shorthand = true
+version = "Two"