Update to use BaseModule on detection

[sungchul2]

Summary

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have ran e2e tests and there is no issues.
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# Copyright (C) 2024 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[jaegukhyun]

Could you check init_weights functions are fully migrated? I think some modules in otx/algo/detection miss their original init_weights function.

[sungchul2]

Could you check init_weights functions are fully migrated? I think some modules in otx/algo/detection miss their original init_weights function.

Done at c9a8562.