execdetails: export grpc process and wait time to time details

[overvenus]

Export grpc process and wait time.

TiDB slow query example:

+++ b/util/misc_test.go
@@ -93,11 +93,13 @@ func TestTimeDetail(t *testing.T) {
        }
-       assert.Equal(t, "time_detail: {total_process_time: 2ms, total_suspend_time: 3ms, total_wait_time: 4ms, total_kv_read_wall_time: 5ms, tikv_wall_time: 6ms}", detail.String())
+       assert.Equal(t, "time_detail: {total_process_time: 2ms, total_suspend_time: 3ms, total_wait_time: 4ms, total_kv_read_wall_time: 5ms, tikv_grpc_process_time: 6ms, tikv_grpc_wait_time: 7ms, tikv_wall_time: 8ms}", detail.String())
 }

Cc tikv/tikv#18274
Cc pingcap/tidb#60030

[hbisheng]

"KvGrpcScheduleTime" sounds like a better name for this measurement, but it might be hard to change the naming now because it's also used in TiKV.

[hhwyt]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cfzjywxk, zyguan

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Details

Needs approval from an approver in each of these files:

• OWNERS [cfzjywxk,zyguan]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-03-21 07:37:41.346077465 +0000 UTC m=+600355.030313545: ☑️ agreed by cfzjywxk.
• 2025-03-25 11:03:12.579553039 +0000 UTC m=+958286.263789136: ☑️ agreed by zyguan.