Centralized Python Resource Library for QApp Reuse

NetBrain currently has no mechanism for storing a shared Python class, library, or package in a central location that can be imported into multiple QApps or plugins; users must duplicate the same code within each QApp that needs it. This enhancement proposes support for importing custom Python resources, such as .py files, pylib, or pypackage, into a shared repository and allowing any QApp or plugin to reference them using standard Python import syntax. Centralized reuse of Python code would reduce duplicate maintenance effort and improve consistency across automation scripts.