Inspired by Quick SQL, I've created a similar utility, called "Quick PL/SQL", that does the same thing, except it generates PL/SQL code (packages with functions and procedures, with standard comment blocks, formatting, etc.) based on a simple markup.
I've recorded a couple of videos to show the tool in action.
Here is an introduction which explains the basic input syntax and the output options:
And here is another video which explains how to create standard CRUD-style (Create, Read, Update, Delete) APIs for your tables:
Try it out for yourself here: https://apex.oracle.com/pls/apex/f?p=QUICKPLSQL:HOME&c=MULEDEV or via this shortcut: https://tinyurl.com/quickplsql2
Of course, I wouldn't mind if this functionality becomes available as part of the QuickSQL utility that is built into APEX! :-)