feat: add fuel amount setting in AutoSmelter

[uxmlen]

Type of change

• [ ] Bug fix
• [x] New feature

Description

Added an option in AutoSmelter.java to specify the amount of fuel to be loaded at a once into each furnace.

Implemented support for moving partial stacks by using InvUtils.move(count) to transfer the precise amount

Related issues

#5295

How Has This Been Tested?

https://github.com/user-attachments/assets/879802c3-f7c1-493c-94d4-0060c0b58cfc

Checklist:

• [x] My code follows the style guidelines of this project.
• [x] I have added comments to my code in more complex areas.
• [x] I have tested the code in both development and production environments.