Refactor CMSIS-RTOS2 adapter to be compliant with MISRA.

[dmitrykos]

• More cleanup of kernel for compliance with MISRA.

[github-actions]

MemBrowse Memory Report

stm32f0-sleep

• FLASH: .text -36 B (-0.2%, 19,768 B / 65,536 B, total: 30% used)

stm32f1-sleep

• FLASH: .text -16 B (-0.1%, 18,905 B / 131,072 B, total: 14% used)

stm32f4-sleep

• FLASH: .text -16 B (-0.1%, 19,733 B / 1,048,576 B, total: 2% used)

[github-actions]

LCOV of commit 80b77ed during Code Coverage - Generic #568

Summary coverage rate:
  lines......: 100.0% (1299 of 1299 lines)
  functions..: 44.4% (1617 of 3641 functions)
  branches...: no data found

Files changed coverage rate: n/a