Added additional ON/OFF functionality for EPS and other subsystems

[sahilfidha]

EPS ON/OFF Functionality:

• Added the ability to toggle the EPS state (ON/OFF).
• All executable commands return an error if attempted while the EPS is turned OFF.
• Note: This restriction currently applies only to executable commands. Update and request command types are unaffected.

Subsystem ON/OFF Functionality:

• Added the capability to toggle the state of other subsystems (e.g., ADCS, GPS, etc.) via EPS commands.
• These changes are visual-only and do not impact functionality outside this file.

Notes:

• The new functionality is isolated within the EPS subsystem and does not affect other files or components.

[rrasmuss4200]

Awesome start overall.

Could you also include a little readme or text with about how to use it? i.e How to send commands and see the updates on the client side.

You can also consider looking into the GPIO library in Python for this if it fits in well

[rrasmuss4200]

This is great. Could also add in additional fields for 'GPIO' pins representing burn wires for antennas and UHF specifically.