Ionut Ovidiu Zailic

fix: make possible adding custom attributes to the shipped otelhttp client metrics - #5084

2

More details on #5084.

### Description At the moment it seems there's no way to add custom attributes to the provided metrics within instrumented http client. In the current implementation the metric attributes are...

The parent context is not propagated to the component when deploying in "single process" mode

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There could be situations where the component would need the parent context when is initializing. Apparently this is not possible when the application is running in the single process mode...

Controlling application logging verbosity

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This PR introduces the ability to set the application logging verbosity by a configurable value, like in the example bellow: ``` [serviceweaver] log_level = debug ... ```