Add models and interfaces

[OlivieFranklova]

closes #28 and sub tickets: closes #23 closes #25 closes #26 closes #16

This pull request did big refactoring. PR introduced a new folder structure and it repaired some badly working code

[github-actions]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
2315	1956	84%	70%	🟢

New Files

File	Coverage	Status
logging_.py	100%	🟢
similarity_framework/src/impl/comparator/distance_functions.py	88%	🟢
similarity_framework/src/impl/comparator/utils.py	84%	🟢
similarity_framework/src/interfaces/common.py	100%	🟢
similarity_framework/src/interfaces/comparator/comparator.py	87%	🟢
similarity_framework/src/interfaces/metadata/metadata_creator.py	95%	🟢
similarity_framework/src/models/settings.py	97%	🟢
similarity_framework/src/models/similarity.py	100%	🟢
similarity_framework/src/models/types_.py	70%	🟢
tests/similarity_framework/test_similarity_comparator.py	100%	🟢
TOTAL	92%	🟢

Modified Files

File	Coverage	Status
constants.py	80%	🟢
TOTAL	80%	🟢

updated for commit: e09c45d by action🐍

[ABMC831]

Quite a few times there are

1. todos in the code,
   I am not quite sure whether it is todo for future, or something that was intended to be fixešd before the PR... so amybe check them which ones you forgot to finish, and which ones are to survive

2. commented code - this should not be in the repo, that is what git is for, wither remove obsolete parts, or put alternatives to config, or something what is not commented out code

3. data + sample outputs (quite substantial) in code
   -> I would consider relocating those to separate repo, so codebase is not tangled with data