feat(servicecatalog): Add new service servicecatalog

[MarioRgzLpz]

Context

In order to cover more checks, we need to create a new AWS service for ServiceCatalog. This new service will allow for the implementation of additional checks and ensure enhanced governance and compliance within Service Catalog portfolios.

Description

Add new service ServiceCatalog with two models Portfolio and PortfolioShare and 3 methods to describe portfolios. Added unit tests for everything.

Checklist

• Are there new checks included in this PR? No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Attention: Patch coverage is 82.14286% with 10 lines in your changes missing coverage. Please review.

Project coverage is 89.84%. Comparing base (e4400ec) to head (68592be).
Report is 33 commits behind head on master.

Files with missing lines	Patch %	Lines
.../services/servicecatalog/servicecatalog_service.py	82.14%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5618      +/-   ##
==========================================
+ Coverage   89.70%   89.84%   +0.13%     
==========================================
  Files        1104     1117      +13     
  Lines       34262    34634     +372     
==========================================
+ Hits        30734    31116     +382     
+ Misses       3528     3518      -10     

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