v4.0.0 : Allow minters to offer optional donation % when minting to treasury

What's Changed

• SFT donation treasury by @bucurdavid in #86
• chore: devnet snippets for donation feature by @bucurdavid in #88
• V4.0.0 : Release Candidate - Support for mint donations by @newbreedofgeek in #87

Full Changelog: v3.0.0...v4.0.0