Add support for CloudFront service

[TagadaPoe]

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Summary

Adds support for CloudFront service.

The CloudFront service is considered as global, so the same usage will be reported for CloudFront, no matter which region we are using.

Note: in the "Service Quotas" service, the CloudFront quotas are listed in the region "us-east-1".

The AWS "Service Quotas" service does not return the applied service quotas for CloudFront, only the default quotas.

Note: when rebuilding the doc, there were some changes not related to CloudFront that I did not commit. Maybe an separate documentation update will be needed ?

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[codecov-commenter]

Codecov Report

Merging #545 (efe095c) into develop (a829ce2) will not change coverage.
The diff coverage is 100.00%.

❗ Current head efe095c differs from pull request most recent head 9e4f162. Consider uploading reports for the commit 9e4f162 to get more accurate results

@@            Coverage Diff             @@
##           develop      #545    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           42        43     +1     
  Lines         3030      3255   +225     
  Branches       455       480    +25     
==========================================
+ Hits          3030      3255   +225     

Impacted Files	Coverage Δ
awslimitchecker/services/__init__.py	100.00% <100.00%> (ø)
awslimitchecker/services/cloudfront.py	100.00% <100.00%> (ø)
awslimitchecker/connectable.py	100.00% <0.00%> (ø)
awslimitchecker/services/ec2.py	100.00% <0.00%> (ø)
awslimitchecker/services/ecs.py	100.00% <0.00%> (ø)
awslimitchecker/services/vpc.py	100.00% <0.00%> (ø)

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[jantman]

@TagadaPoe I'm going to try to get to these PRs today, sorry for the delay. Could you please update your PR to allow changes from maintainers? This needs to be rebased on develop, and the others will need to be rebased as I merge them in. Thanks!

[jantman]

Thank you so much for this, and many apologies for it sitting so long!

[jantman]

This has been released in 12.0.0, which is now live on PyPI and Docker Hub. Thank you so much, and apologies for the delay!

[antonincms]

Don't worry, thank you for the release 👍