Wallet subsystem transaction generator updates

[aspect]

This PR updates the transaction generator logic to account for storage mass.

The following changes have been made:

• Restructure tx generator to calculate and check storage mass
• Optimizations for execution pathways using various pre-checks
• Restructure unit tests to validate mass calculations
• Copy and break-down storage mass calculation into components within the wallet subsystem MassCalculator
• Introduce provisional "mass combining" for future changes to mass handling in tn11 (switching to Max will require updates to unit tests)
• Various improvements to unit tests and error handling
• Fix incorrect use of sigop and minimum signature values in unit tests

[humoud19801]

The overall goal appears to be enhancing the transaction generator logic to better handle storage mass, improving the efficiency of execution pathways, and preparing for future changes in mass handling. The inclusion of unit tests and error handling improvements suggests a focus on code reliability and robustness. It's good practice to ensure that code changes are thoroughly tested and errors are handled appropriately.