Add monorepo starter boilerplate link

[BryanAdamss]

Hello,

This PR adds a link to a monorepo-starter showing how to set up a monorepo with storybook+rollup+lerna+jsdoc

[korfuri]

Do you have evidence of an actual monorepo using this setup at scale? If not, can you explain how this is adding value over simply following up the setup instructions for lerna, jsdoc and others?

[BryanAdamss]

I have used it in a private enterprise project, and have used it to develop more than 20 components and js libraries;

Currently storybook-vue does not support the simultaneous development of vue components and js libraries,and I have not seen similar best practice in the community.

I did some integration and wrote some scripts mysel so that it can support the development of js library and can automatically generate documents.

I want to share with friends in need👏