Closes #439

Protocol Address Updates:

• Added new protocol addresses to ProtocolAddresses class in constants.py to support additional contracts. [1] [2] [3] [4] [5] [6]

Event Mapping Updates:

• Updated NOSTRA_EVENTS_MAPPING and NOSTRA_MAINNET_EVENTS_TO_METHODS to improve readability by consolidating lines and adding new event mappings. [1] [2]
• Updated NOSTRA_MAINNET_ADDRESSES_TO_EVENTS to include new mappings for interest-bearing and non-interest-bearing collateral events. [1] [2]

Method Refactoring:

• Converted several instance methods to class methods in nostra.py to improve code structure and maintainability. [1] [2] [3]

Minor Code Cleanups:

• Removed unnecessary imports and reorganized import statements for better code clarity in events.py.
• Minor formatting adjustments in nostra_mainnet_settings.py for better readability. [1] [2] [3]