feat: implement get_caf

[korikuzma]

close #16

• Creates AnyVlmCohortAlleleFrequencyResult which extends CohortAlleleFrequencyStudyResult (replaces dictionary fields with Pydantic fields)
• Made the assumption that in get_caf, we'll want to make the distinction between no CAF results due to variant not being registered in AnyVar vs no CAF data found

You'll want to update your deps

[jsstevenson]

a couple small tweaks at the level of the client interface

The base branch was changed.

[jennifer-bowser]

Just a couple minor potential suggestions/questions!

[jennifer-bowser]

I'm getting a test now that's failing on this PR that isn't failing for me on main:

FAILED tests/unit/anyvar/test_clients.py::test_get_registered_allele_expressions_unpopulated[anyvar_http_client] - AssertionError: assert Allele(id='ga4gh:VA.Otc5ovrw906Ack087o1fhegB4jDRqCAe', type='Allele', name=None, description=None, aliases=None, exten...ralSequenceExpression', name=None, description=None...

[korikuzma]

I'm getting a test now that's failing on this PR that isn't failing for me on main:

FAILED tests/unit/anyvar/test_clients.py::test_get_registered_allele_expressions_unpopulated[anyvar_http_client] - AssertionError: assert Allele(id='ga4gh:VA.Otc5ovrw906Ack087o1fhegB4jDRqCAe', type='Allele', name=None, description=None, aliases=None, exten...ralSequenceExpression', name=None, description=None...

@jennifer-bowser Can you try wiping your AnyVar DB? All tests are passing in CI 🤔

In anyvar:

from dotenv import load_dotenv
load_dotenv()

from os import environ
uri = environ["ANYVAR_STORAGE_URI"]
from anyvar.anyvar import create_storage
s = create_storage(uri)
s.wipe_db()

[jennifer-bowser]

@jennifer-bowser Can you try wiping your AnyVar DB? All tests are passing in CI 🤔

In anyvar:

from os import environ
uri = environ["ANYVAR_STORAGE_URI"]
from anyvar.anyvar import create_storage
s = create_storage(uri)
s.wipe_db()

The test is still failing for me, but if it's passing for others/CI then I don't want to hold things up. I'll approve this!

[jennifer-bowser]

All tests are now passing for me