New rule: no duplicate name

[josemenveg]

I'm working in a project with cypress and cucumber, and I've found an issue that could be solved with this rule.
The problem is when generating the reports (with mochawesomeReporterOptions) save the report of each .feature file in a .json file which name mathches gherkin file.
I have several folders and, when I've two files with the same name in different folders, it seems that the second execution overwrites the first one.
My idea is use gherkin-lint to avoid this checking that the file names are unique.
In two weeks (looking for free time, I think that I can program the rule in one hour) I'm going to create a pull request to include it.
If someone can see another needs for this rule (or another one) tell me and I will include them.