[FEA] Python API Improvements Tracker

[Iroy30]

Basic Python API for modeling a LP/MILP was added in 25.08. It can be updated with improvements:

• Read and Write MPS files to/from models
• Add Model Deltas
• Update API to remove variables and constraints
• Evaluate and improve performance on CSR building
• Enable using warmstart data
• Job Delta function
• Add Batch LP Solve API