fix: correct pyproject.toml for project-scaffold-cli

- Fixed package name from auto-readme-cli to project-scaffold-cli
- Fixed dependencies to match project-scaffold-cli requirements
- Fixed linting import sorting issues in test files

project_scaffold_cli/templates/rust/Cargo.toml.j2

@@ -0,0 +1,9 @@
+[package]
+name = "{{ project_slug }}"
+version = "0.1.0"
+edition = "2021"
+authors = ["{{ author }} <{{ email }}>"]
+description = "{{ description }}"
+license = "{{ license }}"
+
+[dependencies]