Add cx_setup.py for building the ReticulumMeshChatX application

- Introduced a new setup script using cx_Freeze to facilitate building the application.
- Updated version.py to maintain consistency in version string formatting.
- Modified build-backend.js to use poetry for executing the build process.

meshchatx/src/version.py

@@ -1,5 +1,6 @@
-"""Auto-generated helper so Python tooling and the Electron build
+"""
+Auto-generated helper so Python tooling and the Electron build
 share the same version string.
 """
 
-__version__ = "2.41.0"
+__version__ = '2.41.0'