Monorepo -> Tree Shaking Refactor: Turn sideEffect setting in package.json

[holgerd77]

Part of #3446

Earliest start together with official breaking release work!

Small issue to not get over it since it seems important, citing from @tmm from here #3446 (comment) :

In addition to what @roninjin10 described, "sideEffects": false should be added to package.json files for maximum tree-shakability.

Without "sideEffects" switched off build systems aren't able to properly eliminate dead code (e.g. Next.js) and could still contain unused code even if they are unused.

More info: https://webpack.js.org/guides/tree-shaking/#mark-the-file-as-side-effect-free

As an additional note, this might actually need some analysis if we do have side effects in our packages, so this would be using things in a global context and the like.

If we do it is likely a good idea to refactor along that these go away!

[holgerd77]

Closed by #3497

[roninjin10]

Let’s go! I’ll share how big of a difference this made in Tevm based apps when this goes live