This commit adds two queries for identifying external APIs which are
used with untrusted data.
These queries are intended to facilitate a security review of the
application, and will report any external API which is called with
untrusted data. The purpose of this is to:
- review how untrusted data flows through this application
- identify opportunities to improve taint modeling of sinks and taint
steps.
As a result this is not suitable for integration into a developer
workflow, as it will likely have high false positive rate, but it may
help identify false negatives for other queries.
