Managecogs does not reload dependent packages

[49Indium]

If a non-cog file (e.g. utils\uq_course_utils.py) is modified, reloading cogs dependent on that file will not reload the file.

[andrewj-brown]

The way this will work is through importlib (https://docs.python.org/3/library/importlib.html).

Might require some grim hacks in order to figure out what modules/files are imported by a cog without storing a 2nd source-of-truth (i.e. regex for "import" lines).