Add 3.3V LDO to Science Board Schematic

[tabiosg]

Description:
This GitHub issue is created to address the task of enhancing the Science Board schematic by adding a 3.3V Low Dropout Regulator (LDO). The inclusion of this LDO is essential for providing a stable and regulated 3.3V power supply to the Science Board and its associated components. The input power for the 3.3V LDO will be sourced from the 12V supply.

Scope:
This task encompasses the following key areas related to adding a 3.3V LDO to the Science Board schematic:

Schematic Modification:
Open the Science Board schematic in the design tool (e.g., Altium).

Component Selection:
Select a suitable 3.3V LDO component for the schematic.

Placement and Connections:
Place the 3.3V LDO component on the Science Board schematic, considering component positioning and orientation.
Establish the necessary connections to ensure that the 3.3V LDO receives its input power from the 5V buck supply.

Labeling and Annotation:
Label the LDO component and its associated connections appropriately, following the schematic annotation guidelines.

Integration with Science Board:
Ensure that the 3.3V LDO integrates seamlessly with the Science Board schematic, allowing for the provision of stable and regulated 3.3V power sourced from the 5V buck supply.

Additional Information:
Include any supplementary context, unique requirements, or specific goals related to this issue.
By providing a simplified description, you'll enable effective collaboration and ensure the successful addition of the 3.3V LDO with a 5V input in the Science Board schematic