how-to guide for tree-shaking

[afoxman]

Write a how-to guide for enabling tree-shaking through configuration (CLI) or manually.

[kelset]

we do have https://microsoft.github.io/rnx-kit/docs/guides/bundling#tree-shaking and https://microsoft.github.io/rnx-kit/docs/tools/metro-serializer-esbuild but we need more docs to expand more on the usage and reply to FAQs and such

[hushizhi]

we do have https://microsoft.github.io/rnx-kit/docs/guides/bundling#tree-shaking and https://microsoft.github.io/rnx-kit/docs/tools/metro-serializer-esbuild but we need more docs to expand more on the usage and reply to FAQs and such

Damian Bogel (@kele)
In other words, why rambundle is not compatible with tree-shaking? Is there any plan to do compatibility in the future?