Idea: add brute-force as fallback

[nikitastupin]

Sometimes suggestions aren't working but it's nevertheless possible to retrieve a portion of the schema. This can be achieved by the good old brute-force technique. To amplify its efficiency permutations may be used as with subdomain enumeration techniques.

We may also probe if suggestions are enabled and if they aren't fallback to brute-force.

Though it's good to have a flag to choose the method manually.