Refactoring/aws/route53

[misg]

This PR aims to migrate AWS Route53 service to the new architecture, as part of #183.
Please note that I removed hosted_zones resources which were not used anywhere and got rid of route53domains service which was a duplicate of route53 service (hence the method merge_route53_and_route53domains in aws/provider.py).

[codecov-io]

Codecov Report

Merging #267 into refactoring/resource-configs will increase coverage by 0.09%.
The diff coverage is 63.33%.

@@                       Coverage Diff                       @@
##           refactoring/resource-configs    #267      +/-   ##
===============================================================
+ Coverage                         32.51%   32.6%   +0.09%     
===============================================================
  Files                               149     150       +1     
  Lines                              5619    5603      -16     
===============================================================
  Hits                               1827    1827              
+ Misses                             3792    3776      -16

Impacted Files	Coverage Δ
ScoutSuite/providers/aws/provider.py	9.89% <ø> (-0.09%)	⬇️
ScoutSuite/providers/aws/configs/services.py	50% <50%> (+0.81%)	⬆️
...utSuite/providers/aws/resources/route53/service.py	52.94% <52.94%> (ø)
ScoutSuite/providers/aws/facade/route53.py	80% <80%> (ø)
ScoutSuite/providers/aws/facade/facade.py	43.66% <83.33%> (-0.63%)	⬇️
ScoutSuite/output/js.py	25% <0%> (-0.36%)	⬇️

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[Aboisier]

Wow 💯

[x4v13r64]

@misg as part of this PR could you please confirm/resolve the following open issues:
#13
#163