Add benchmark results or link to key features section

[segundovolante]

Description

The main project page has a list of key features, specifically interested about performance:

• Performance - DJL serving running multithreading inference in a single JVM. Our benchmark shows DJL serving has higher throughput than most C++ model servers on the market.

I could not find any link to the results in the project , or the website https://docs.djl.ai/. Is it possible to add more information about the benchmark?

Will this change the current api? How?
No, this is mainly about documentation.

Who will benefit from this enhancement?
Users/Developers that are interested in choosing DJL vs other model serving options

References

N/A