[FR] Improve JSON Display Config for Developer Usability #320

Export all display config values in a format that is immediately usable, eliminating the need for developers to perform manual conversions beforehand. Changes include:

Display:

• Export glow_color as a hexadecimal integer

Block Display:

• Rename block to block_state to better align with Minecraft naming conventions

Text Display:

• Rename align to alignment to better align with Minecraft naming conventions
• Format background as an ARGB integer value
• Include default_background boolean
• Include text_opacity as a byte value:
  • This should be exported as a byte, but allow for more user-friendly input in the editor, enabling an alpha value range from 0 to 1 for easier manipulation