Doctrings for Optimization, SymbolicOperator and Losses

[Joao-L-S-Almeida]

• simulai/residuals/_pytorch_residuals.py
• simulai/regression/_pytorch/_dense.py
• simulai/optimization/_optimization.py
• simulai/optimization/_losses.py

[TarikKaanKoc]

Oiiiii @Joao-L-S-Almeida,

I wanted to let you know that starting tomorrow evening, I will be working on updating the codebase for Optimization, SymbolicOperator, and Losses in the SimulAI project. These tasks are crucial for the development of our project and are necessary for the success of our goals.

I will be updating the documentation thoroughly to ensure that it is accurate and up-to-date. Thank you for your understanding and support.