Add support for the Bun package manager

[harish-vts]

Bun is a JavaScript runtime and package manager with a focus on performance and ensuring a stellar developer experience. Since its package manager is compatible with Node.js, one can have projects that use Node.js as the runtime and only use Bun to install NPM dependencies. bun install is equivalent to npm/yarn/pnpm install, only an order of magnitude faster.

VTS has evaluated using Bun as a package manager and found it to be an easy transition from Yarn version 1. Lack of Depfu support is the only thing preventing us from replacing Yarn with Bun.