Benchmarks: Add Benchmark - Add IB Loopback performance benchmark.

[yukirora]

Description
Add RDMA Loopback performance microbenchmark.

Major Revision

• Add microbenchmark, example, test, config for RDMA Loopback

[codecov]

Codecov Report

Merging #112 (d81dd29) into main (db297fb) will increase coverage by 0.41%.
The diff coverage is 89.09%.

@@            Coverage Diff             @@
##             main     #112      +/-   ##
==========================================
+ Coverage   87.35%   87.76%   +0.41%     
==========================================
  Files          46       47       +1     
  Lines        2293     2403     +110     
==========================================
+ Hits         2003     2109     +106     
- Misses        290      294       +4     

Flag	Coverage Δ
cpu-unit-test	71.58% <89.09%> (+1.47%)	⬆️
cuda-unit-test	87.68% <89.09%> (+0.41%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...hmarks/micro_benchmarks/ib_loopback_performance.py	88.88% <88.88%> (ø)
superbench/benchmarks/micro_benchmarks/__init__.py	100.00% <100.00%> (ø)
superbench/benchmarks/return_code.py	100.00% <100.00%> (ø)
superbench/executor/executor.py	78.18% <0.00%> (ø)
superbench/common/utils/network.py	64.51% <0.00%> (+25.80%)	⬆️

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[cp5555]

/azp run

[azure-pipelines]

Pull request contains merge conflicts.