Suggestion: use 'Compile' function to get regular expression of exclude path

[foxdd]

we've met a problem in the daily use of SCC tool, which is, when the input exclude path list contains an incorrect regular expression, the entire scan process will be interrupted and a panic is thown out. So i think Compile function may be more user-friendly, so the process will continue and only the incorrect exclude path will be ignored

[boyter]

Yeah panic is pretty much the wrong approach.

Added one small comment on the PR to ensure we surface the error though so the user is always informed if this is the case.