feat: add dia backend

[unger1984]

Added dia library. The tests are encouraging, but there are two problems:

1. I'm not sure that I did everything right. Parsing json and receiving files is implemented under the hood of dia_body, in test routes I just check that the data has come to me. See if it's done right.
2. benchmark.sh cannot kill the server process and the following benchmarks cannot start. I checked on MacOS, maybe this is the problem.

[SirusCodes]

Added dia library. The tests are encouraging, but there are two problems:

Thanks a lot for contributing

1. I'm not sure that I did everything right. Parsing json and receiving files is implemented under the hood of dia_body, in test routes I just check that the data has come to me. See if it's done right.

I will check that in a while

2. benchmark.sh cannot kill the server process and the following benchmarks cannot start. I checked on MacOS, maybe this is the problem.

sh file is broken you can try running the python script or we can just check the results from CI 😅

[SirusCodes]

Just a suggestion, you should work a bit more on the documentation for your packages. It was a bit difficult for me to understand the features of it.

Adding examples with what it does would be good enough.

[SirusCodes]

LGTM