Feature/prevent simultanious flow rates

[FBumann]

Description

Improve the flexibility of mutual exclusivity constraints in Components and add the option to the LinearConverter class

Type of Change

• Bug fix
• New feature
• Documentation update
• Code refactoring

Related Issues

Closes #(issue number)

Testing

• I have tested my changes
• Existing tests still pass

Checklist

• My code follows the project style
• I have updated documentation if needed
• I have added tests for new functionality (if applicable)

Summary by CodeRabbit

• New Features

  • Components and converters can define multiple independent mutual‑exclusion constraint groups via prevent_simultaneous_flows (nested groups of flow labels).

• Deprecated

  • Passing Flow objects to prevent_simultaneous_flows is deprecated; prefer flow label strings (object usage emits a deprecation warning).

• Bug Fixes / Validation

  • Stronger validation and clearer errors for unknown or duplicate flow labels within groups.

• Tests

  • Expanded unit and round‑trip serialization tests covering single/multiple groups, normalization, deprecation warnings, and error cases.

• Documentation

  • Updated docstrings describing grouped constraints and deprecation.