Swift: More sinks for swift/cleartext-logging

[geoffw0]

Add more sinks for the swift/cleartext-logging query:

• model NSException (I also added a missing case for the swift/uncontrolled-format-string query while I was at it).
• model for C printf variants.
• heuristic model for string arguments of calls that look like logging.
• also added taint flow through AutoClosureExprs so that models-as-data sinks on @autoclosure arguments can work.

TODO:

• review final sinks + results on MRVA
• check performance (locally)
• DCA run
• after Swift: More sinks for swift/uncontrolled-format-string #14807 is merged, the implementation of PrintfFormat needs merging with the one from there.