Bump project version to 0.4.0 and introduce `InstallationStatus` enum to track installation states. Add `should_rollback` function and use it to selectively roll back installations on failure. Enhance tests with parameterized testing for rollback functionality.

Incorporate support for alternative tool installations via 'alt' and 'mode' attributes. Update relevant tests, schemas, and configuration files accordingly.

Adjusted the installation process for optional tools to support user input and assumptions for automated workflows. Also included a version bump to 0.4.2 and updated test scenarios accordingly.

Modified `starter2.yaml` to include an echo statement in the `init` script. Updated `test_starterfile_parser.py` to align tests with the new script content. This ensures the init script reflects the intended behavior during tests.

This commit introduces a new test file, `test_module_with_monitoring.py`, which adds tests for the initialization and destruction processes in `Module`, `ScriptModule`, and `GitModule` classes. These tests utilize various mocking strategies to ensure subprocess interactions are properly monitored.

Replace explicit TypeError raises with implicit ValueError from get_script calls to streamline the module creation process. This reduces redundant error-handling code while maintaining functionality.

Introduced new unit tests for the `is_yaml_loadable_type` function to ensure it correctly handles various data types and raises a `SchemaError` for unloadable types. Included tests for strings, integers, floats, booleans, lists, dictionaries, and `None`. Used pytest for exception handling in the test case for unloadable types.

Bump `startout` version to 0.4.3 and `typer` dependency to 0.12.4. This commit includes the necessary changes in `pyproject.toml` and `poetry.lock`.