[python] Add benchmark python engine

[frankfliu]

Change-Id: Ia16944958456e07339496a003f9085466b51d32e

Description

Brief description of what this PR is about

• If this change is a backward incompatible change, why must this change be made?
• Interesting edge cases to note here

[codecov-commenter]

Codecov Report

Merging #1267 (a6eebbc) into master (9aaaa66) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1267      +/-   ##
============================================
- Coverage     71.99%   71.98%   -0.01%     
+ Complexity     5114     5113       -1     
============================================
  Files           473      473              
  Lines         21913    21913              
  Branches       2345     2345              
============================================
- Hits          15777    15775       -2     
- Misses         4932     4933       +1     
- Partials       1204     1205       +1     

Impacted Files	Coverage Δ
api/src/main/java/ai/djl/repository/Artifact.java	87.80% <0.00%> (-1.63%)	⬇️

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