feat(billing): Define quotas endpoints for Seer operations

[jarrettscott]

Creates interfaces for Seer billing operations

Closes: https://linear.app/getsentry/issue/BIL-523/create-interfaces-in-sentry

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
25299	1	25298	313

View the top 1 failed test(s) by shortest run time

tests.sentry.api.test_api_owners.APIOwnersTestCase::test_api_owner_owns_api

Stack Traces | 0.065s run time

#x1B[1m#x1B[.../sentry/api/test_api_owners.py#x1B[0m:22: in test_api_owner_owns_api
    assert owner.value in self.teams
#x1B[1m#x1B[31mE   AssertionError: assert 'issues' in {'alerts-create-issues', 'alerts-notifications', 'core-product-foundations', 'crons', 'dashboards', 'data', ...}#x1B[0m
#x1B[1m#x1B[31mE    +  where 'issues' = <ApiOwner.ISSUES: 'issues'>.value#x1B[0m
#x1B[1m#x1B[31mE    +  and   {'alerts-create-issues', 'alerts-notifications', 'core-product-foundations', 'crons', 'dashboards', 'data', ...} = <tests.sentry.api.test_api_owners.APIOwnersTestCase testMethod=test_api_owner_owns_api>.teams#x1B[0m

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