Checkmarx results parser - Normalize paths

[cx-rafaelc]

Normalize SAST results file path in order to compute OWASP scorecard on Windows or Linux base scans .

[davewichers]

@darkspirit510 - can you look at this change? Are there other parsers we should make a similar change to in order to platform independent, like this change does? This change looks fine to me.

[nunoocx]

LGTM

[davewichers]

@darkspirit510 - I merged this, but would still like you to look if a similar change should be applied to other parsers.

[darkspirit510]

org.owasp.benchmarkutils.score.parsers.Reader#extractFilename should already handle Linux and Windows path to extract filename. You could check if this works and if not, fix the method so all readers beneftit from it 🥹