add rustfmt config for rust template

templates/rust/.rustfmt.toml

@@ -0,0 +1,17 @@
+edition = "2024"
+merge_derives = true
+newline_style = "Unix"
+reorder_imports = true
+reorder_modules = true
+use_field_init_shorthand = true
+use_try_shorthand = true
+# unstable_features = true
+# format_code_in_doc_comments = true
+# format_macro_bodies = true
+# format_strings = true
+# float_literal_trailing_zero = "IfNoPostfix"
+# imports_granularity = "Crate"
+# overflow_delimited_expr = true
+# reorder_impl_items = true
+# group_imports = "StdExternalCrate"
+# wrap_comments = true