Added CloudFront Functions example

[paulosergio-jnr]

Issue: #12

Description of changes:
Added CloudFront Functions example with both request and response functions.

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[ericzbeard]

Why did we go with cloudfront-functions as the name? Why not expand on the existing cloudfront sample?

[paulosergio-jnr]

Why did we go with cloudfront-functions as the name? Why not expand on the existing cloudfront sample?

It was just because the -headers suffix in the directory's name seemed to be something very specific.

WDYT of merging both examples, applying the comments above, and changing the name to just cloudfront-functions?

[ericzbeard]

Why did we go with cloudfront-functions as the name? Why not expand on the existing cloudfront sample?

It was just because the -headers suffix in the directory's name seemed to be something very specific.

WDYT of merging both examples, applying the comments above, and changing the name to just cloudfront-functions?

If the differences are not too significant I'm ok with that. We could also merge with the cloudfront app and just have one

[paulosergio-jnr]

Why did we go with cloudfront-functions as the name? Why not expand on the existing cloudfront sample?

It was just because the -headers suffix in the directory's name seemed to be something very specific.
WDYT of merging both examples, applying the comments above, and changing the name to just cloudfront-functions?

If the differences are not too significant I'm ok with that. We could also merge with the cloudfront app and just have one

After evaluating the three different examples regarding CloudFront, I merged both that are focused on deploying CloudFront Functions as cloudfront-functions and let the cloudfront as is given these points:

• cloudfront example deploys the cloudfront distribution in a simpler way compared to the other two.
• cloudfront example has a considerable more complex comment to create the cloudfront distribution.
• cloudfront example is using pre-created resources, as the other two examples are creating the whole environment from scratch.

What do you think @ericzbeard ?