There are no grpc implementation for getenergyprices and getbandwidthprices http API

[L-Reid]

System information

java-tron version: java -jar FullNode.jar -v
-> 4.7.2

Expected behaviour

I need to get energy/bandwidth historical prices through grpc protocal.

Actual behaviour

In fact, there are no such grpc APIs, and I cannot get energy/bandwidth historical prices through grpc protocal.

[lxcmyf]

@L-Reid
Thank you for your reminder. You are right. After checking the code implementation of Java tron, there are indeed no grpc implementations for these APIs. These improvements will be added in future versions.