Make contract between Task and JobData

[zero88]

Is your feature request related to a problem? Please describe.
Enforce typing between JobData and Task
That makes coding life easier in the compile time to avoid cast data

Describe the solution you'd like

interface JobData<T> {
    <T> T get();
}
interface Task<T>{
    void execute(@NotNull JobData<T> jobData, @NotNull TaskExecutionContext executionContext);
}