Support maximum request length configurations in the HTTP and OTel sources

[dlvenable]

Is your feature request related to a problem? Please describe.

Some configurations will not work if a request size is too large. For example, an http source with a kafka buffer will fail to write to Kafka if the request size is greater than 1MB. Data Prepper does not check the request size up-front leading to a confusing error.

Describe the solution you'd like

Provide new configurations on the HTTP/gRPC sources (this includes all three OTel sources) to configure a maximum request length.

e.g.

apache-log-pipeline:
  source:
    http:
      path: "/${pipelineName}/logs"
      max_request_length: 1mb

Describe alternatives you've considered (Optional)

Have different exceptions thrown from the buffer to indicate the size is too large.

Additional context

This is somewhat related to the PR to increase the Kafka message size in the kafka buffer:

#3916

[dlvenable]

We should be able to do this:

sb.maxRequestLength(sourceConfig.getMaxRequestLength());

[dlvenable]

These Data Prepper sources now return 413 Request Entity Too Large if the request length exceeds the maximum defined size. By default, there is no defined size.