Make the config patterns configurable through settings.py

[merelcht]

To be done after:

• Make core config accessible in dict get way (e.g. config_loader["catalog"]) #1863

Description

Users can't currently change what regex the ConfigLoader uses to fetch configuration.

Context

• As written up in Make config glob paths configurable by the user #1363 this feels restrictive
• On top of that users might want to load other config as well e.g. for Spark or MlFlow

Proposed Implementation

Make the ConfigLoader configurable through settings.py for the mapping of catalog -> catalog glob pattern, parameters -> parameters glob pattern, etc (spark -> glob patterns)