[BTW Addon] Custom Spawn

• Add support for chinese (thx to Eternity)
• Removed unnecessary comments
• Improve scanning accuracy
• Removed unnecessary biome (Nether, end)
• Add a progression message showing how many attempts have been done during world creation
• Strongholds now generate according to the coords of the custom spawn

The current version is probably more performance hungry, let me know if any issue appears (on discord or in github)

• Scan improvement
• Ingame configuation implementation
• Removed priority score per biome

• Port to BTW:CE 3.0
• Improved config handling
• Added stepScan as a config
• Fixed issue with onlyBiome config
• Changed the spawn creation message to show which biomes is (isn't) present from their colors