add CLP/µSlope to JSONBench

[CLP](https://github.com/y-scope/clp) in [μSlope](https://www.usenix.org/system/files/osdi24-wang-rui.pdf) says

> Our evaluation shows that µSlope achieves 21.9:1 to 186.8:1 compression ratio, which is at least a few times higher than any existing semi-structured data management systems (SSDMS); The compression ratio is 2.34x as high as Zstandard and the search speed is 5.77x of the other SSDMSes.

> µSlope’s search speed is 2.47x of ClickHouse’s, 8.09x of PostgreSQL’s, and 6.74x of MongoDB®’s.

It's interesting to look at its JSONBench results.

Start by reviewing the JSONBench repository and the linked CLP project and µSlope paper to understand how benchmark systems are represented and evaluated. Add CLP/µSlope to the benchmark coverage and record comparable JSON results; done means the new systems run through the existing benchmark process and their results are available for comparison.

Written by the indexing model from the issue text.