Extend Top SQL resource dimensions with logical read/write and RocksDB block reads

Enhancement

Extend TiKV Top SQL / resource metering with finer-grained resource dimensions:

• Split the existing logical IO into logical read and logical write dimensions.
• Add foreground RocksDB block-read count deltas (physical-read IO approximation) to resource usage records.
• Select Top-N candidates per resource dimension; reported groups are their union and can exceed max_resource_groups.
• Attribute conditional reads in raw compare-and-swap; exclude batched Raftstore apply/store write workers.

Related Work

TiKV

• *: extend Top SQL resource dimensions tikv/tikv#19953

kvproto

• resource_usage_agent: add RocksDB block read count pingcap/kvproto#1498
• Tracking issue: https://github.com/pingcap/kvproto/issues/1507

TiDB (upstream tracking)

• Enhance topSQL with Network/IO dimensions pingcap/tidb#62916