Ability to write report only on explicit demand

**Is your feature request related to a problem? Please describe.**
I want to avoid writing allure reports all the time on the developer local machine.

**Describe the solution you'd like**
I want to have some kind of environment or argument for the PHP CLI command to enable report writing.

Some kind like
```shell
./vendor/bin/phpunit --with-allure-report
```

**Describe alternatives you've considered**
I understand that developers might have local phpunit.xml, but it's not an easy to manage multiple configurations.