add android test code

[lanking520]

Description

Add android model loading test code

[codecov-commenter]

Codecov Report

Merging #1714 (87e1e87) into master (bb5073f) will decrease coverage by 1.61%.
The diff coverage is 69.69%.

@@             Coverage Diff              @@
##             master    #1714      +/-   ##
============================================
- Coverage     72.08%   70.47%   -1.62%     
- Complexity     5126     5516     +390     
============================================
  Files           473      523      +50     
  Lines         21970    24446    +2476     
  Branches       2351     2646     +295     
============================================
+ Hits          15838    17229    +1391     
- Misses         4925     5907     +982     
- Partials       1207     1310     +103     

Impacted Files	Coverage Δ
api/src/main/java/ai/djl/modality/cv/Image.java	69.23% <ø> (-4.11%)	⬇️
...rc/main/java/ai/djl/modality/cv/output/Joints.java	71.42% <ø> (ø)
.../main/java/ai/djl/modality/cv/output/Landmark.java	100.00% <ø> (ø)
...main/java/ai/djl/modality/cv/output/Rectangle.java	72.41% <0.00%> (ø)
...i/djl/modality/cv/translator/BigGANTranslator.java	21.42% <ø> (-5.24%)	⬇️
...odality/cv/translator/BigGANTranslatorFactory.java	33.33% <0.00%> (+8.33%)	⬆️
...nslator/InstanceSegmentationTranslatorFactory.java	14.28% <0.00%> (-3.90%)	⬇️
.../ai/djl/modality/cv/translator/YoloTranslator.java	8.33% <0.00%> (-0.50%)	⬇️
.../modality/cv/translator/YoloTranslatorFactory.java	8.33% <0.00%> (-1.67%)	⬇️
...i/djl/modality/cv/translator/YoloV5Translator.java	5.38% <0.00%> (-0.31%)	⬇️
... and 285 more

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