fix(_socha.pyi): Removed does_field_have_current

[ErikBcd]

Description

This is for #49
Massive changes, took me about 256h to write

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

I ran the program and stuff

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas YES VERY MUCH YES YES
• 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
• New and existing unit tests pass locally with my changes
• Skeedles skedaddled

[maxblan]

lgtm