simulator: make simulator great again

[lhy1024]

Enhancement Task

feature

• [ ] support load hot region info from file
• [ ] support report hot read region in store heartbeat
• [x] support joint consensus #5469
• [ ] add scatter case #5455
• [ ] support split region schedule

enhancement

• [ ] add more log
• [x] #5322
• [x] #5260
• [x] #5672
• [ ] #5662
• [ ] #5687
• [x] #5683
• [x] #6580

cases

• [x] #1776
• [ ] #1775
• [ ] hot region with file

fix bug

• [x] adjust log file to tiup playground #5445
• [x] the operator should share one limiter. #5323
• [x] #5444

usability

• [x] #5288

[bufferflies]

how about new sub task to using the describe file to generate workload.

[lhy1024]

It is related with https://github.com/tikv/pd/issues/2500