Add justfile and update rustfmt options

justfile

@@ -0,0 +1,32 @@
+# Lists the available actions
+default:
+	@just --list
+
+# Remove generated files
+clean:
+	cargo clean
+
+# Check code syntax
+check:
+	cargo check
+
+# Generate API docs
+docs:
+	cargo doc
+
+# Check code style
+lint:
+	cargo clippy
+
+# Format the code
+fmt:
+	cargo +nightly fmt
+
+# Automatically fix some code syntax/style issues
+fix:
+	cargo fix --allow-dirty --allow-staged
+	just fmt
+
+# Run the normal tests
+test:
+	cargo test

rustfmt.toml

@@ -0,0 +1,7 @@
+unstable_features = true
+format_code_in_doc_comments = true
+format_macro_matchers = true
+format_strings = false
+imports_granularity = "Module"
+group_imports = "StdExternalCrate"
+use_field_init_shorthand = true