1.feat(core): add gRPC interfaces for resource price query introduced in java-tron v4.7.3, as below:
getBandwidthPrices(): query historical bandwidth unit price.getEnergyPrices(): query historical energy unit price.getMemoFee(): query historical memo fee unit price.getBandwidthPricesOnSolidity(): query historical bandwidth unit price.getEnergyPricesOnSolidity(): query historical energy unit price.
2.feat(abi): optimize methods in TypeDecoder, which allows developers to decode different types of parameter values easily
decodeNumericdecodeAddressdecodeBytesdecodeBooldecodeDynamicBytesdecodeUtf8StringdecodeStaticStructdecodeDynamicArraydecodeDynamicStruct
3.feat(test): upgrade gRPC Nile testnet endpoints to official endpoints when running Unit tests