Motivation

• Fixes a wrong dependency on the themed package which otherwise breaks build.
• Upgrades to yarn 4.
• Instead of bundling the yarn package it relies on corepack like the upstream now suggests.
• Uses yarn 4 as task runner instead of lerna because latest lerna isn't multiplatform anymore and doesn't work on several architectures including my workstation (ppc64le).
• Add a new package.json script to create tarball packages. Useful since react-native-elements doesn't work with yarn link.

Feel free to cherry pick the commits you want, but I suggest to merge them all.
I didn't create separate PRs because several commits depend on each other and the current HEAD is broken so it wouldn't build/pass tests otherwise.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Jest Unit Test
• Checked with example app
• Checked with production app

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation using yarn docs-build-api
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Additional context