Add osal hal#289

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LarkspurRaven:add_osal_hal

Commits on May 30, 2025

[BM_{OSAL|HAL}] Add HAL layer to remove tight coupling on STM chip
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[BM_{OSAL|HAL}] Add comments, add simple unit test for OSAL. Add mock OSAL
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Commits on May 31, 2025