Added RaritySniper evaluation with fixes for sum formula

[impreso]

• Implemented the RaritySniper scores in the resolver script and added rank difference metrics for the RaritySniper.
• Fixed the sum formula by applying trait normalization (changed formula from sum to dot)

Tests:

1. Manually tested the script

Pytest passing:

pytest-xprocess reminder::Be sure to terminate the started process by running 'pytest --xkill' if you have not explicitly done so in your fixture with 'xprocess.getinfo(<process_name>).terminate()'.
(opensea-test) ➜  open-rarity git:(impreso/rarity_sniper) ✗ pytest
/Users/2gether/.pyenv/versions/3.10.3/envs/opensea-test/lib/python3.10/site-packages/apischema/__init__.py:66: UserWarning: graphql-core version 2.3.2 is incompatible with apischema;
GraphQL schema generation is thus not available.
  warnings.warn(
================================================================================================================ test session starts ================================================================================================================
platform darwin -- Python 3.10.3, pytest-7.1.2, pluggy-1.0.0
Using --randomly-seed=2100754547
rootdir: /Users/2gether/workspaces/open-rarity
plugins: anyio-3.6.1, xdist-2.5.0, forked-1.4.0, env-0.6.2, flaky-3.7.0, xprocess-0.18.1, ddtrace-1.1.2, vcr-1.0.2, mock-3.7.0, randomly-3.12.0, web3-5.29.0, dotenv-0.5.2, anchorpy-0.4.1, socket-0.5.1, django-4.5.2, subtests-0.7.0, cov-3.0.0
collected 8 items                                                                                                                                                                                                                                   

openrarity/tests/test_scoring.py ....                                                                                                                                                                                                         [ 50%]
openrarity/tests/test_collection.py ....                                                                                                                                                                                                      [100%]

================================================================================================================= 8 passed in 0.65s =================================================================================================================
pytest-xprocess reminder::Be sure to terminate the started process by running 'pytest --xkill' if you have not explicitly done so in your fixture with 'xprocess.getinfo(<process_name>).terminate()'.```