State Network improvements

[acolytec3]

Does a variety of improvements on the state network

• Reorganizes the tests more logically
• Adds getAccount, getBytecode, and getContractStorage functions to the state network that retrieve content locally and/or from the network via recursive find content
• Updates the UltralightStateManager to use the state level APIs for retrieving accounts and bytecode
• Add new integration tests for retrieving content from other nodes as well as recursive find content tests