feat: extend nx-plugin:configuration generator with preset logic

[BioPhoton]

User story

As a developer I want to be as productive as possible and reuse some of my category configurations.
ATM the configuration generator does not provide this option so I have to add it manually.

Acceptance criteria

• The configuration generator should provide a perset option to indicate that I also want to generate a preset file.
  • If perset is true the nx-plugin creates an additional code-pushup.preset.ts with default exports
    • The preset is used in code-pushup.conifg.ts

Implementation details

No response