[djl-serving] Add dynamic batch feature back

[frankfliu]

Change-Id: I5a70eb894e749f02377a534509881ce25211c2e8

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 #1154 (f58f351) into master (0df8265) will decrease coverage by 0.05%.
The diff coverage is 58.33%.

@@             Coverage Diff              @@
##             master    #1154      +/-   ##
============================================
- Coverage     70.26%   70.20%   -0.06%     
+ Complexity     5339     5337       -2     
============================================
  Files           513      513              
  Lines         23664    23681      +17     
  Branches       2552     2556       +4     
============================================
- Hits          16627    16626       -1     
- Misses         5674     5687      +13     
- Partials       1363     1368       +5     

Impacted Files	Coverage Δ
...src/main/java/ai/djl/serving/wlm/ModelManager.java	78.76% <0.00%> (-1.42%)	⬇️
...a/ai/djl/serving/wlm/TemporaryBatchAggregator.java	0.00% <0.00%> (ø)
.../main/java/ai/djl/serving/wlm/BatchAggregator.java	64.28% <37.50%> (-11.58%)	⬇️
...ava/ai/djl/translate/ServingTranslatorFactory.java	80.26% <80.00%> (-0.95%)	⬇️
api/src/main/java/ai/djl/modality/Output.java	96.29% <100.00%> (-0.26%)	⬇️
.../ai/djl/serving/http/ManagementRequestHandler.java	89.84% <100.00%> (-1.57%)	⬇️
...a/ai/djl/serving/wlm/PermanentBatchAggregator.java	100.00% <100.00%> (ø)
api/src/main/java/ai/djl/repository/Artifact.java	87.80% <0.00%> (-1.63%)	⬇️
.../main/java/ai/djl/benchmark/AbstractBenchmark.java	90.17% <0.00%> (-1.16%)	⬇️
... and 2 more

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