Make semantic-release an option

This generator is pretty specific to my personal workflow, so it might be nice to make semantic-release integration an option.

As part of this option, though, it would be cool that once all dependencies are installed, the generator will `cd` into the newly created directory and run `semantic-release-cli setup` as the final step.

Start at the generator entry point and trace where dependencies are installed and the new directory is entered; the issue names no specific files or tests. Done means semantic-release integration is optional and, when enabled, the generated directory runs `semantic-release-cli setup` after dependency installation.

Written by the indexing model from the issue text.