[OpPerf] Handle positional arguments

[ChaiBapchya]

Description

Fixes #15735
Currently, OpPerf utility only takes keyworded arguments **kwargs as argument to run the profiler. It is passed as dictionary value to "inputs"

However, certain functions expect positional arguments (*args) instead of keyworded arguments (**kwargs).

This PR handles that case.

Checklist

Essentials

Please feel free to remove inapplicable items for your PR.

• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage:
• Code is well-documented:
• To the my best knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change

Changes

• Handle positional args

Comments

Tested it with
a. Clone and checkout this branch
b. Build the repo
c. Test both the cases

>>> from benchmark.opperf.utils.benchmark_utils import run_performance_test
>>> from mxnet import nd
>>> import mxnet as mx

Without positional arguments

>>> run_performance_test(nd.add,run_backward=True, dtype='float32', ctx=mx.cpu(),inputs=[{"lhs":(2,2),"rhs":(2,2)}],warmup=10, runs=25)
INFO:root:Begin Benchmark - add
INFO:root:Complete Benchmark - add
[{'add': [{'avg_time_forward_add': 0.0701, 'max_storage_mem_alloc_cpu/0': 0.008, 'avg_time_backward_add': 0.055, 'inputs': {'lhs': (2, 2), 'rhs': (2, 2)}}]}]

With positional arguments

>>> run_performance_test(nd.squeeze,run_backward=True, dtype='float32', ctx=mx.cpu(),inputs=[{"args":(10,1,2)}],warmup=10, runs=25)
INFO:root:Begin Benchmark - squeeze
INFO:root:Complete Benchmark - squeeze
[{'squeeze': [{'avg_time_forward_squeeze': 0.0412, 'max_storage_mem_alloc_cpu/0': 0.04, 'avg_time_backward_squeeze': 0.0303, 'inputs': {'args': (10, 1, 2)}}]}]

[apeforest]

LGTM after fixing the indent