Fix the welter boss

[murilo09]

Description

Fix The Welter Boss

Behaviour

Actual

There is no the welter summons and other small errors in the welter mechanic

Expected

Add The Welter Summons and fix in the amount of eggs summons

Fixes

#714

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I checked the PR checks reports
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works

[majestyotbr]

It's working and fixed the mentioned issue.