Add option --use-aapt2

[0xdad0]

Added --use-aapt2 option to use aapt2 with Apktool during the rebuild phase (see #23 and #37)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other (e.g., refactoring, documentation, etc.)

Checklist

• I have read the contributing guidelines
• I have performed a self-review of my own code (added comments, corrected misspellings etc.)
• My code follows the style guidelines of this project
• I have made corresponding changes to the documentation (if appropriate)
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes

[codecov]

Codecov Report

Merging #84 (4ca035d) into master (4b4b369) will decrease coverage by 0.04%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master      #84      +/-   ##
==========================================
- Coverage   77.77%   77.73%   -0.05%     
==========================================
  Files          49       49              
  Lines        2448     2452       +4     
  Branches      484      485       +1     
==========================================
+ Hits         1904     1906       +2     
- Misses        416      417       +1     
- Partials      128      129       +1     

Impacted Files	Coverage Δ
src/obfuscapk/main.py	95.45% <ø> (ø)
src/obfuscapk/tool.py	96.50% <33.33%> (-1.37%)	⬇️
src/obfuscapk/cli.py	88.63% <100.00%> (+0.26%)	⬆️
src/obfuscapk/obfuscation.py	83.98% <100.00%> (+0.06%)	⬆️

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