Add ControlPlaneResponseDecoder

[fabianfett]

Add ControlPlaneResponseDecoder to decode incoming HTTP responses.

Motivation:

We want to save allocations wherever possible. A big driver of allocations is the NIOHTTP1 HTTPResponseDecoder. The reason for this is: It can not be optimized for the lambda use case and allocates header string values that are not needed.

Modifications:

• Add ControlPlaneResponseDecoder to decode only what we need from an HTTP response
• Add LambdaRuntimeError which shall be the single error type in the future

Result:

Faster control plane response decoding.

[tomerd]

closing in inactive PRs, feel free to re-open if still relevant