Inputs Outputs and Stores are null

[HenryGeorgist]

cc-java-sdk/src/main/java/usace/cc/plugin/api/IOManager.java

Line 73 in e2b2d44

private DataSource[] inputs;

If a payload does not have inputs/outputs or stores specified the iomanager has a null array. initializing with an empty array by default would prevent this issue in the code.