provide a overall summary along with call-wise

Community Contribution License

All community contributions in this pull request are licensed to the project maintainers under the terms of the Apache 2 license. By creating this pull request I represent that I have the right to license the contributions to the project maintainers under the Apache 2 license.

Description

provide an overall summary along with call-wise

Bonus - mc support top api is nothing but mc admin trace --stats

Motivation and Context

Duration: 1m3s ▱▱▱
RPM    :  1168103.3
RX Rate:↑ 2.5 TiB/m
TX Rate:↓ 2.4 TiB/m
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How to test this PR?

Types of changes

[ ] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Optimization (provides speedup with no functional changes)
[ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

[ ] Fixes a regression (If yes, please add commit-id or PR # here)
[ ] Unit tests added/updated
[ ] Internal documentation updated
[ ] Create a documentation update request here

minio / mc