feat: add gzip compression strategy

[williazz]

Summary

This is an opt-in feature to support compression via the CompressionStream API. Currently, we are hard coded to use GZIP algorithm, 2KB minimum raw size to compress, and 80% minimum compression ratio to dispatch. In the future, we may expose these configurations. For now, end user just needs to add this to config to enable:

const config: AwsRumConfig = {
        compressionStrategy: {
            enabled: true
        },
        ...
    };

Also, I updated InternalLogger to use a boolean to check if debug mode is enabled, so that we don't have to do all these annoying config.debug lookups.

Testing

Updated unit, integ. Smoke tests are missing right now, and honestly it is pretty annoying to write refactor them based on how they are currently setup, and I couldn't get them working. I will follow up with a separate PR for smoke tests

Manual testing

GZIP compression shown in network tab payload

GZIP compression ingestion in RUM console

GZIP compression ingestion in logs

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

[ishajos]

Can you update the description to include the changes related to modifying InternalLogger with a debugEnabled option?

[ps863]

comment: We need some monitoring around if/if not the payload compression is not corrupted and the entire payload is received as was sent from the client.

I think the smoke tests can achieve this as long as we check the entire payload carefully. Otherwise we run a risk of having a silent bug which will never be caught

[ps863]

comment: We should point out somewhere in docs for users using proxies and modifying the payload, they would need to update their proxy level configs to handle compressed requests (if they choose to opt in)

[williazz]

okay will

1. improve monitoring
2. update docs // this may not impact proxies if they are just forwarding the payloads