Allure-pytest: support hiding/masking a step's parameter

[delatrie]

Discussed in https://github.com/orgs/allure-framework/discussions/1610

^{Originally posted by nikeasyanzi March 11, 2022}
I find the feature has implemented as secret in java.
But is there any plan to implement that in other testing tools?

Feature request: a way to disable step parameter auto-displaying in the report.
allure-framework/allure2#863