Abstract matching

[ArielAzia]

The default intent in matching is to find the "same" function in another file or group of files. However, matches can be generalized to include similar but not exact matches. Since most matchers will return a metric representing how similar the resulting matches are, it will be easy to implement such similarity matches flows. thus, we can consider the default matching wizard (i.e. find this function) or flow as one that looks for the best resulting match across the chosen matchers, while other wizards will have a different matching flow (find all variants of this function that call the same APIs. find functions that have similar CFG etc.)