[FEATURE] Silent framework

[FBumann]

Prerequisites

• I have searched existing issues and discussions
• I have checked the documentation

Feature Category

API/Usability Improvement

Problem Statement

When running flixopt code (and tests), there are a lot of plots opening.
ALso, the Solver always print to the console.

Proposed Solution

I would like to be able to specify the (default) behavior through the config.

• don't show plots by default.
• don't print solver logs to console

This, together with other parameters could be applied with a CONFIG.silence(). This would be quite neat in many cases it hink

Use Case & Examples

• flixopt runs "Under the hood" (as part of another project)
• SegmentedCalculation or other future calculation types that run multiple Models

Desired API (Optional)

`fx.CONFIG.silence()`

or 

fx.CONFIG.plotting.auto_open = False
fx.CONFIG.solving.console = False
fx.CONFIG.apply()

Alternatives Considered

No response

Priority/Impact

Medium - Nice to have enhancement

Additional Context

No response