Create a plugin for identification of PII data

## Description

There are several cases where PII data is available within a repository, and some (credit cards, cloud account ids, emails etc) are easily identifiable via regexes. We could develop a plugin to detect PII data, and their categories, and embed this information within the chalkmark.

## Result

A field that exposes whether PII data is available, their category, and potentially the values redacted.

## Dependencies

There should be minimal dependencies for such plugin, only PCRE/regex support is needed