Added opacity tokens

👻 New Opacity tokens

Thanks to @mihail-alexe-nutanix for adding opacity tokens. Learn how to setup opacity tokens in the readme

What's Changed

• update jest to 28 by @lukasoppermann in #208
• React@18 by @lukasoppermann in #209
• update webpack by @lukasoppermann in #210
• Fix token extraction by @lukasoppermann in #211
• fix placeholder for prefix inputs by @lukasoppermann in #212
• Add custom opacity token support by @mihail-alexe-nutanix in #207
• pre-fix for motion by @lukasoppermann in #213

Full Changelog: v6.4.0...v6.5.0