chore(ourlogs): Rename import to sentry_sdk.logger, export Log type

[colin-sentry]

Fixes #4155, #4225

[codecov]

❌ 22 Tests Failed:

Tests completed	Failed	Passed	Skipped
23793	22	23771	5872

View the top 3 failed test(s) by shortest run time

tests.test_logs test_logger_integration_warning

Stack Traces | 0.065s run time

tests/test_logs.py:250: in test_logger_integration_warning
    assert log_entry["severityText"] == "warning"
E   AssertionError: assert 'warn' == 'warning'
E     - warning
E     + warn

tests.test_logs test_logs_message_params

Stack Traces | 0.067s run time

tests/test_logs.py:164: in test_logs_message_params
    assert otel_attributes_to_dict(envelopes[0].items[0].payload.json["attributes"])[
E   AssertionError: assert {'stringValue': '1'} == {'intValue': '1'}
E     Left contains 1 more item:
E     {'stringValue': '1'}
E     Right contains 1 more item:
E     {'intValue': '1'}
E     Full diff:
E     - {'intValue': '1'}
E     ?     ^
E     + {'stringValue': '1'}
E     ?   +++  ^

tests.test_logs test_logger_integration_warning

Stack Traces | 0.074s run time

tests/test_logs.py:250: in test_logger_integration_warning
    assert log_entry["severityText"] == "warning"
E   AssertionError: assert 'warn' == 'warning'
E     
E     - warning
E     + warn

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