feat: add lmfit for SimMonitor, refactored sim_data with baseclass, introduce slitproxy

Description

This MR includes a major refactoring of the simulation framework, and how data is being handled within.

Related Issues

Closes #45 (closed) #44 (closed) #37 (closed) #36 (closed) #35 (closed) #33 (closed)

Type of Change

• Refactored classes SimPositioner, SimFlyer, SimMonitor and SimCamera
• Add base class SimulatedDataBase to sim_data. Data classes for SimPositioner/SimFlyer (does nothing), SimMonitor and SimCamera inherit from this base class.
• refactored device proxies (SlitProxy). Proxies now register signals and their classes in the devices that they are supposed to affect.
• Added some documentation in the classes themselves, e.g. dev.<device>.sim.sim_show_all gives an overview about functionality and available methods of the simulation.

Potential side effects

Hopefully None.

Screenshots / GIFs (if applicable)

Additional Comments

• documentation is pending and will be addressed immediately.
• test will be written for the simulation, to ensure functionality of the devices as they are currently (e.g. use Protocol class)
• 1DWaveForm is to be implemented
• MR for the core will be required to allow Proxies to be loaded from BEC (https://gitlab.psi.ch/bec/bec/-/tree/feat/AddOphydDeviceProxyToBackendForSimulationFramework?ref_type=heads)