Add autochange log generation and commit message linting

To aid in automatic changelog generation, enforcing commit messages of the following [form](https://github.com/angular/angular/blob/22b96b9/CONTRIBUTING.md#-commit-message-guidelines) by a combination of [husky](https://www.npmjs.com/package/husky) [commitlint](https://www.npmjs.com/package/commitlint) would allow a tool like [conventional-changelog](https://github.com/conventional-changelog/conventional-changelog) to automatically generate the changelog on releases of the reference implementation.

A sample of a project using this setup can be seen [here](https://github.com/mattrglobal/node-bbs-signatures)