chg: 🎨 🐛 better url management + Windows URL fix

[ixunio]

PR Details

The SDK is not able to parse the HTTP URLs when using on Windows. URLs generation is somehow using python os.path helpers that make path with "/" on Unix systems but "" on Windows.

Description

Rewrite URL generation from one single function
Fix Windows URL generation issue

How Has This Been Tested

This has not been tested properly, only on invoice API.

Types of changes

• [ x ] Docs change / refactoring / dependency upgrade
• [ x ] 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 change)

Checklist

• [ x ] My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• [ x ] I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[fharper]

LGTM

[fharper]

Was redone by @ianardee in #39