Use cargo fmt and conform to Style Guide (mostly)

rustfmt.toml

@@ -0,0 +1,18 @@
+edition = "2024"
+style_edition = "2024"
+
+# Modifications to the standard style
+blank_lines_upper_bound = 3
+tab_spaces = 2
+use_field_init_shorthand = true
+
+# Stricter subset of standard style
+condense_wildcard_suffixes = true
+format_macro_matchers = true
+group_imports = "StdExternalCrate"
+hex_literal_case = "Upper"
+imports_granularity = "Module"
+newline_style = "Unix"
+normalize_comments = true
+normalize_doc_attributes = true
+wrap_comments = true