Upgrade to Forge 1.20.2

[BONNe]

All these changes were made to allow TwitchSpawn to run on 1.20.2.

• Update gradle version
• Add settings.gradle as it is a new standard for projects
• Add sound event registry and augment type registry
• Rework item parsing, as it is changed
• Rework network manager and usage to apply 1.20 changes
• Switch from performCommand to performPrefixedCommand
• Fix some GUI rendering to reflect 1.20 changes
• Replace TranslatableComponent with the new Component#translatable
• Add null-pointer check for sub-title text, as it cannot be null for packet sending.