Introduce a teardown target

[BioPhoton]

User story

As a developer that debugs e2e tests I want to disable the teardown logic to be able to inspect the environment.
After i am done, I want to have a convenient way to clean up the left over files as well as running processes.

At the moment we can do that over --keepServerRunning argument in the env-bootstrap target and the we use the kill-process target to stop the server. What is missing is a cleanup of the test folder and files.

This introduces a bad DX for developers as:

• changes in the configuration need to happen in multiple places
• teardown and cleanup is handled centralised and should be per step
• rebooting of a environment is not possible (starting task's into a existing setup without conflicts)
• hard cleaup before start is not possible

Acceptance criteria

• add new environment target nxv-env-teardown and add it to all environments
  • reverts changes to all files
  • deletes all created files and folders
  • if running stops related server
  • works for temporary folders as well as static test folders in git history
• teardown is executed by default if a .verdaccio-registry.json is present
• feature is documented
• feature is tested

Implementation details

No response