Remove fuzzEngine and sanitizer from FuzzBinder inputs

[MarahGamdou]

The current FuzzBinder version needs the fuzzing engine and the used sanitizer as inputs to generate the fuzzing claims. The problem with this is:

• It is possible to have multiple sanitizers and fuzzing engines.
• The user needs to know how these fuzzing engines and sanitizers are named internally by OSS-Fuzz (the names in the project config file are different).

Therefore, these parameters should be extracted from the file names (saved on a given day) instead of being inputs.
Some aggregations may be needed in that case, especially if multiple fuzzing engines or sanitizers are used on the same day.