Cake.Core upgraded to 3.0.0.

[unseensenpai]

Description

Cake.Core upgraded for Cake.Discord package.

Related Issue

I was using this package for .net6 and .net7 but got problem about cake.core 1.0.0.

Motivation and Context

I want to use it on my future projects.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [ ] 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 change)

Checklist:

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.

[nils-a]

@unseensenpai thank you for your contribution. I hope you don't mind that I took the liberty to rebase and update some of your changes to fit the newest codebase.

[nils-a]

@unseensenpai your changes have been merged, thanks for your contribution :+1: