Extract abstract base classes from pools and pool ref stores - #1391

Extract abstract base classes from pools and pool ref stores#1391

simonvoelcker merged 6 commits into

frequenz-floss:v1.x.xfrequenz-floss/frequenz-sdk-python:v1.x.xfrom

simonvoelcker:extract_abstract_poolsimonvoelcker/frequenz-sdk-python:extract_abstract_poolCopy head branch name to clipboard