feat: Added new colors to the palette file

[vikilinho]

Description

The palette.dart file contains just five colors, I have added 20 new colors and the colors are in alphabetical order.

Checklist

• The title of my PR starts with a Conventional Commit prefix (fix:, feat:, docs: etc).
• I have read the Contributor Guide and followed the process outlined for submitting PRs.
• I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation in docs and added dartdoc comments with ///.
• I have updated/added relevant examples in examples.

Breaking Change

• Yes, this is a breaking change.
• No, this is not a breaking change.

Related Issues

[st-pasha]

By the way, you don't need to close your old PR and open a new one whenever you are making a change. Just run git push from the command line, and the changes will get submitted into your PR.

[vikilinho]

By the way, you don't need to close your old PR and open a new one whenever you are making a change. Just run git push from the command line, and the changes will get submitted into your PR.

Got it!