[receiver/splunkenterprise] Refactor component to better utilize SDK

[shalper2]

Component(s)

receiver/splunkenterprise

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

The current logic of the Splunkenterprise receiver does not utilize the provided SDK as comprehensively as it could. Specifically, httpauth, configauth, and basicauthextension could all be leveraged to reduce custom code and improve the readability of the component. Additionally there is a custom timeout setting that can be replaced by using the ScraperControllerSettings.Timeout field.

Describe the solution you'd like

A refactor of the component to leverage the above mentioned pieces of the opentelemetry SDK to replace custom code implementing the same functionality.

Describe alternatives you've considered

Currently the component works well but relies on custom implementations of functionality which exists in the codebase.

Additional context

No response

[shalper2]

please assign to me

[github-actions]

Pinging code owners for receiver/splunkenterprise: @shalper2 @MovieStoreGuy. See Adding Labels via Comments if you do not have permissions to add labels yourself.

[crobert-1]

Removed needs triage flag, totally agree to reusing the existing logic for these functionalities.

[codeboten]

This is closed by #27205