Create simple test to determine impact buffer size on releasing chunks

[gpalmer-latai]

Demonstrates the drastic effect that buffering large amounts of chunks has on the performance of releasing chunks. Instructions are in the readme.

On my machine, a buffer depth of 10,000 results in these stats:

Total time elapsed (ns): 4300686066
Max release time (ns): 1490726
Min release time (ns): 0
Avg release time (ns): 430542

If I increase it only to 100,000, the subscriber hangs for at least minutes and needs to be killed.