Merge NewLib Within Monorepo

[dchansen06]

Newlib Monorepo Optimizations

Problem and Scope

A variety of files were duplicated without reason for every single project which adds to bloat and presents more issues

Description

Create a STM32 Cube Common interface library and setup the HAL/LL interface libraries for each chip to link against it

• stm32_assert.h
• sysmem.c
• syscalls.c

Move the system files into platform for the same treatment as the startup assembly

• system_stm32g4xx.c
• system_stm32u5xx.c
• system_stm32l4xx.c

Gotchas and Limitations

None, these files should not have been edited previously

Testing

• HOOTL testing
• HITL testing
• Human tested

Testing Details

• Nucleo-G474
  • Analog Calibration
  • Blinky
  • Hello
  • CCU
  • ECU
  • ADC Testing
  • CAN Testing
• GR25 Big Bird
  • Analog Calibration
  • Blinky
  • Hello
  • CCU
  • ECU
  • ADC Testing
  • CAN Testing
• GR25 Dash Panel
  • Blinky
• Nucleo-L476
  • Blinky

Larger Impact

Part of incremental efforts to further optimize the monorepo for creating boards and using peripherals without worrying about overhead

Additional Context and Ticket

Resolves #228

[dchansen06]

Confirmed on GR25 Big Bird and Nucleo-G4 and GR25 Dash Panel

[VihanJ]

Added LED GPIO writes to L4BLINKY main.c