Add performance reference for important matmul kernels

[zhanglx13]

This PR adds a database of matmul configs that we want to keep track of their performance.
This PR also adds a reference performance collected on smc300x-ccs-aus-GPUF292 (MI300X).
The database and reference are serving two purposes:

1. Performance tracking. We will update the reference on a regular basis as a performance tracking record.
2. Regression detection. We will run benchmark on the database on a daily basis to catch any regression.

[xiaohuguo2023]

should we add the other perf-kernels as well, eg, FA fwd kernel ?

[xiaohuguo2023]

what are the purposes of this database file ? are they used to benchmark against the ref.csv ? if that's the case, what if the parameters changed, e.g GROUP_SIZE_M change from 4 to 8 ?

[xiaohuguo2023]

we may need other database file format if this is a daily/per commit tasks ?

[zhanglx13]

This database.yaml is used as the current best perf config. If you have an optimization that can improve the best perf number and requires a different config, we should update the database.
The main purpose is to catch regression.

[zhanglx13]

should we add the other perf-kernels as well, eg, FA fwd kernel ?

Yes we should. I'll add FA related kernels later.