Release 0.0.11 - NetBox 4.2.x

[panaceya]

Source from iDebugAll/phonebox_plugin#57

This PR updates the plugin significantly.

v0.0.11 for NetBox 4.2.x support
Resolves a number of open issues
Implements a couple of requested features (Navigation + Optional Site on Number)
Removes legacy conditionals and standardises models
Standardises compatibility matrix on README
Converts to pyproject.toml away from setup.py

Tested against NetBox 4.2.3 (Docker)