Simulation Control Implementation

[AvocadoMoon]

Problem

All of the code to modify the database entries for simulation control is present, but none of it has been implemented within the Java client.

Solution

Create additional tests for getting simulation progress, use the new API endpoints within the Java client, and get broadcast messages to function.

• [ ] Add progress tracking and communication, with tests for it
• [ ] Tests to simulate the different states of a simulation
• [ ] Implement the new endpoints within the client