Threads via quadNA

QuadNA has support for threads, should use it on thread-able functions.
Should be specified in auto-error.json.
Docs: https://dyalog.github.io/documentation/20.0/programming-reference-guide/threads/threads-and-external-functions/

Start by inspecting auto-error.json and the project’s thread-able functions, then read the linked Dyalog documentation on threads and external functions. Identify which functions can use QuadNA threads and specify that support in auto-error.json. Done means all eligible functions are represented with the appropriate thread configuration.

Written by the indexing model from the issue text.