Refactor Codebase & Introduce SqlProxyFactory

[yezz123]

• I made some simple changes in the codebase regarding The repo structure.
• Support Hatchling over Old Build used in Python (Keeping the static build, because JSQL Depend on Compiled Project (ex. SQLAlchemy, Jinja2)).
• Refactor code, I notice a bunch of simple changes ex:
  • Replace calls to string.format() with f-strings.
  • Use list, set, or dictionary comprehensions directly instead of calling list(), dict() or set().
  • Convert list/set/tuple comprehensions that do not change the input elements into.
• Introduce SQLProxyFactory This class is used to create a SqlProxy object that wraps the result of a query.