5.1.0: JSON/YAML storage, Optionals, bug fixes, & more

• Fix file order for publishing workflow
• Add AnnoyingFile.Options#replace
• Update Item NBT API
  • 2.13.1 -> 2.13.2
• Fix publish workflow permissions
• Update Libby
  • 1.3.0 -> 1.3.1
• Fix some IDE warnings
• Use Optionals & move storage stuff
• Fix auto-update checker
• Update bStats & Gradle
  • bStats: 3.0.2 -> 3.1.0
  • Gradle: 8.8 -> 8.10.2
• Add Registrable.Ignore annotation
• Update PlaceholderAPI
  • 2.11.3 -> 2.11.6
• Allow additional properties for database connections
• Update Shadow
  • 8.1.8 -> 8.3.3
• Fix AnnoyingFile#load(ConfigurationSection)
• Add JSON & YAML storage methods and improve storage type migration
• Improve/fix EntityData#convertOldData(...)
• Update dependencies
  • Gradle Galaxy: 1.2.2 -> 1.3.2
  • JetBrains Annotations: 24.1.0 -> 25.0.0
  • Java Utilities: 1.1.0 -> 2.0.0
• Bump version (5.0.0 -> 5.1.0)