chore: Refactor LogPipeline, MetricPipeline, and TracePipeline Controllers

[TeodorSAP]

Description

The 3 controllers shall be refactored, such that when creating a reconciler, all the variables/constants describing parameters that will not externally change (e.g. dynamic/base CPU, Memory limits) won't have to be passed anymore.

The configurations of the respective gateways and agents have to be refactored accordingly. Such that this pattern is not present in our code anymore.

Reasons

1. Bring these variables closer to where they are used, and make the controller code cleaner.
2. Besides the name, namespace, and priorityClassName these attributes are not externally configurable anymore (since the corresponding feature flags have been removed)

Attachments

Example for LogPipeline:

https://github.com/kyma-project/telemetry-manager/blob/main/controllers/telemetry/logpipeline_controller.go#L69-L87

https://github.com/kyma-project/telemetry-manager/blob/main/controllers/telemetry/logpipeline_controller.go#L175-L192

https://github.com/kyma-project/telemetry-manager/blob/main/controllers/telemetry/logpipeline_controller.go#L224-L242

Release Notes