nx plugin - configuration generator for standalone workspace layout

[BioPhoton]

The nx plugin should have a generator that is responsible for adding the code-pushup.config.json to a project in the workspace.

Todo:

• The project should get added over a CLI argument
• The project, if not given in the CLI arguments, should show up as select options in the CLI prompts
• In a standalone workspace layout a script should get added to the root package.json
• In a common workspace layout (e.g. libs/apps) an error should get thrown that mentions that the feature will be implemented in the future.

[IKatsuba]

1. Why should we throw an error in the common layout? Technically, standalone and common layouts are the same things. I'd like to write a warning message for all layouts. For example:

@code-pushup/nx-plugin is not fully ready. For now, you have to run code-pushup with the following command:

code-pushup <command> --config={projectRoot}/{fileName}

In the future, we plan to add the Code PushUp executor.

Or we can add a command with code-pushup collect with the config option as a target.

2. Why should we add config to package.json? The separated config is more extendable.