Support special characters in request name

[Dobby89]

Edit: It appears this issue was already raised and closed in #147 but the issue still remains.

Postman allows special characters in the names of each request, which is useful when you're like me and prefer to name requests by the actual URL being requested so I have a 1:1 relationship between my API and the request name in Postman.

For example, if the API has an endpoint of GET customers/{id} (where {id} represents a dynamic path param) I would name the request as customers/{id}.

Bruno doesn't allow this and gives this error:

As a result, when I imported my collection from Postman, the special characters got changed to hyphens as per below