flight in turbulence

This is the frist version of the backend but not very stable, which includes payment gateway integration and currency conversion. Product ordering is stable, but other parts like tax, shipping, and other important features are not yet available

What's Changed

• Common import by @MySecondLanguage in #1
• Money exchange refactored by @MySecondLanguage in #2
• Multi currency by @MySecondLanguage in #3
• get currency from either header or from request by @MySecondLanguage in #4
• Currency backend by @MySecondLanguage in #5
• Added celery beat by @MySecondLanguage in #6
• Total Order Precision by @MySecondLanguage in #7
• Product variant by @MySecondLanguage in #8
• Plugin clone is fixed by @MySecondLanguage in #9
• Refresh currency by @MySecondLanguage in #10
• Currency backend import is improved by @MySecondLanguage in #11
• currency backend refactored by @MySecondLanguage in #12
• Refactored text choice by @MySecondLanguage in #13
• Fixed utils function by @MySecondLanguage in #15
• Improved some docs by @MySecondLanguage in #16
• added celery by @MySecondLanguage in #17
• Fallback if curreny not allowed by @MySecondLanguage in #18
• Refactored currency backend code by @MySecondLanguage in #19
• added ordering for better database query performance by @MySecondLanguage in #20
• Added tax class by @MySecondLanguage in #21
• Humanate rate by @MySecondLanguage in #22
• removed unessary fields by @MySecondLanguage in #23
• written management command for initialization by @MySecondLanguage in #24
• Refactored by @MySecondLanguage in #25
• fixed-serializer by @mahfujul-helios in #26
• written management command to generate openai yaml file for nxtbn-docs by @MySecondLanguage in #27
• Refactored models by @MySecondLanguage in #29
• added currency utils by @MySecondLanguage in #31
• Fixed currency issue in faker by @MySecondLanguage in #32
• Fixed util function by @MySecondLanguage in #33

New Contributors

• @MySecondLanguage made their first contribution in #1
• @mahfujul-helios made their first contribution in #26

Full Changelog: https://github.com/nxtbn-com/nxtbn/commits/v1.0.0