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/README.md.j2

@@ -0,0 +1,23 @@
+# {{ project_name }}
+
+{{ description }}
+
+## Installation
+
+```bash
+cargo add {{ project_slug }}
+```
+
+## Usage
+
+```rust
+use {{ project_slug }}::run;
+
+fn main() {
+    run();
+}
+```
+
+## License
+
+{{ license }}