fix: do not minify compiled sources for Node.js

[robertrossmann]

Minification makes debugging this project in its installed form practically impossible because

1. you cannot reasonably step through the code
2. variable names are unreadable

I understand the motivation to minify the codebase when targetting web browsers to reduce the overal size of the SDK but for Node.js file size is only a problem when it goes to the extremes.

I would like to also ask you, should you accept this PR, to also publish a non-minified version of the SDK to npm. 🙏

[joaquim-verges]

Thanks for this @robertrossmann !

This change seems very reasonable to me. We need to run a couple of tests to check what happens on some browser frameworks that annoyingly load the node package instead of the browser one 😐

Will let you know once it's done, we'll try to get to it this week. cc @jnsdls

[robertrossmann]

Thanks @joaquim-verges ! ❤️ FYI merging and releasing this to npm would be a great help on my current project as it would allow me to step through the SDK's code when things don't work as I would expect. 😄 Also, this would allow me to apply hotfixes on my local installation of the SDK with patch-package and submit a proper pull request at a more convenient time than two days before product launch. 😂

[joaquim-verges]

Merging this as well. Haven't had time to test much but it's easy to revert if reports come through.