feat(nx-plugin): add convert-to-inverred generator

[BioPhoton]

Preconditions:

• ci: migrate to Nx 19 #771

User story

As a existing user of code-pushup in an Nx monorepo I want to be able to convert my configuration to a deferred setup.

Acceptance criteria

Convert existing CodePushup project(s) using @code-pushup/nx-plugin:autorun executor to use @code-pushup/nx-plugin.

nx generate convert-to-inferred
By default, Nx will search for convert-to-inferred in the default collection provisioned in workspace.json.

You can specify the collection explicitly as follows:
nx g @code-pushup/nx-plugin:convert-to-inferred

Show what will be generated without writing to disk:
nx g convert-to-inferred --dry-run

The project to convert from using the @code-pushup/nx-plugint:autorun executor to use @code-pushup/nx-plugin. If not provided, all projects using the @code-pushup/nx-plugin executor will be converted.

• running the commend will refactor all projects in the monorepo to use inferred tasks for code-pushup
  • it will also refactor to existing options inside a given target
• add docs
• add tests

Implementation details

No response