Allow for a list of files as input
There are some circumstances where it would be nice to be able run sca2d on a set of files rather than a whole directory. For example, if the project uses is using a library with warnings or info messages, those may be outside the control of the project that wants to check their own code.
If the analyzer allowed for a list of files as input users could just specify all the files they want to check. Another idea is it could allow the exclusion of some directories.